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1984 Corvette crossfire injection help?

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Old Dec 9, 2007 | 06:02 PM
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Originally Posted by qws
If your not registered you won't see the message boards. You must first register
i did ,,,,,,,,,,,,,,,, logged in and still ZIP
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Old Dec 9, 2007 | 06:10 PM
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Originally Posted by comp
i did ,,,,,,,,,,,,,,,, logged in and still ZIP
did you do this:

Go to Tools, Internet Options, Privacy. Click on the Advanced tab. Check "override automatic cookie handling" and check "accept for "first party cookies" and "third party cookies". Also check "Always allow session cookies".
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Old Dec 9, 2007 | 07:09 PM
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Originally Posted by ps374
I have the Xram set up and it disappointing at best. The last owner did a lot of work to get my 84 to run better than the stock crossfire set up.
It is reports just like this that I base my belief on that my home ported manifold is a better performer than the X-Ram.



Originally Posted by ps374
Wealand promised him 50 horsepower with the xram set up , I can can testify Im not sure its any faster than a stock Crossfire.It uses a 4bbl manifold instead of the restricted crossfire with the crossfire TBs. He also has a 85 pump and a ecm from a Camaro.
I am surprised that Weiand would make any representations for a manifold modified by someone else, X-Ram, for an application Weiand never intended. The 1985 fuel pump will do nothing for a car with a good stock fuel pump.



Originally Posted by ps374
Im thinking of porting the old crossfire I was given with the car in the box that the 4bbl manifold cam in.
That could help, quite a bit.

RACE ON!!!

Last edited by CFI-EFI; Dec 9, 2007 at 07:27 PM. Reason: Typos
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Old Dec 9, 2007 | 07:58 PM
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Originally Posted by ps374
I have the Xram set up and it disappointing at best. The last owner did a lot of work to get my 84 to run better than the stock crossfire set up. Wealand promised him 50 horsepower with the xram set up , I can can testify Im not sure its any faster than a stock Crossfire.It uses a 4bbl manifold instead of the restricted crossfire with the crossfire TBs. He also has a 85 pump and a ecm from a Camaro. The car runs smooth and is very responsive but my 0 to 60 times with the roof off and a stop watch was 7.3 seconds. Lets suppose that I was not overly accurate and a little slow pressing the stop watch button. That would leave me Im still running about the the stock 6.7 0 to 60 stock time Car and Driver suggested on their 84 road test. Im thinking of porting the old crossfire I was given with the car in the box that the 4bbl manifold cam in.
first off wiend (not sure of the spelling) that makes the base to the x ram doesnt make the x ram a seperate company purchases the wiend intake and fabs up the x ram so i doubt wiend promises anything about it. also have read from others using the x ram that the x ram is better suited for higher cubic inch motors like a 383. on a stock motor your best bet is probably a ported intake. now if you plan on getting into engine mods like a 383 kit heads cam or who knows what might want to keep that x ram as it may come in handy if not probably best to sell it to someone who will use it and benifit from it.
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Old Dec 9, 2007 | 08:33 PM
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I am going to throw my .02 cents in here. I for one was pleased with the performance of the x-ram when using it on the stock motor. I did have it dynoed after I installed it but no 1/4 mi times. I've never dynoed a stock 84 but think it should dyno around 171-174 rwhp with a good tune. Mine was at 207rwhp thats a 33 hp gain. Now of course I changed heads/cam so its a totally different setup.
I've said it before: , for me I went with it because at the time I didn't have way to port it myself and to pay someone to do it would cost more than for me just to purchase the x-ram. And it was a quick install in less than 4 hours.
Now, the only thing I don't like about the x-ram is the bolts that hold the two halves of the plenum together. I feel that it should be improved on.
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Old Dec 9, 2007 | 09:52 PM
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Originally Posted by qws
did you do this:

Go to Tools, Internet Options, Privacy. Click on the Advanced tab. Check "override automatic cookie handling" and check "accept for "first party cookies" and "third party cookies". Also check "Always allow session cookies".
yes i did
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Old Dec 10, 2007 | 01:03 AM
  #27  
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Originally Posted by CFI-EFI
There is no misleading going on. The post is about the Crossfire engine. My Crossfire engine is ALL factory stock, with the exception of my ported intake manifold. And by FACTORY stock, I mean that it has never, in 165000+ miles, even had any repairs, even to factory specs. It has never had a head off. The drag radials, the true duals, and Vigilanti converter are no secret. If they were, YOU wouldn't know about them to keep bringing them up. I have done some tuning and other minor adjustments, too. Am I cheating, lying, or mislead people if I don't disclose every tire pressure adjustment?

Apples to oranges? Maybe you feel it is an unfair match up, but both participants have been clearly defined. There are no secrets. I have raced several similarly modified, and more, TPIs and beaten them too, but the point was how a properly factory built CFI would compare to the factory TPIs as introduced and released. This isn't the first time you've brought up that my car has more than just a ported intake. I sense a note of jealousy.

RACE ON!!!
new members to the forum and or hobby wont be able to tell the difference in your technicality between stock MOTOR, and stock VEHICLE. from your post it looks as though alls you need to beat TPI cars is simply a ported manifold WITH NOTHING ELSE. this mod will NOT get an otherwise stock Crossfire CAR into the high 13s

if your supporting mods arent a secret, why do you NEVER mention them, and only speak of the ported manifold in your list of mods? maybe youre accomplishments with the CFI wont seem as good when you include the other parts youve added to it?

now youre just being snide with the whole tire pressure thing... id think true duals, DRs, and a aftermarket stall are a bit more noteworthy than an alteration in tire pressure people are going to want to know EVERY change you made to your car to get it to run what it did, because theyre going to try your "ported manifold only" theory and come nowhere near a 13.8 and wonder why

it is apples to oranges when you keep comparing BONE STOCK TPI cars to your exhaust, stalled, sticky tire equipped Xfire but then claim it was only your ported manifold is what beats them. if it was simply a ported manifold only CFI vs a bone stock TPI, then the comparison would be valid

jealous? now thats funny im impressed with what youve done with youre stockish CFI, but id wish youd just tell the whole story
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Old Dec 10, 2007 | 09:31 AM
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Originally Posted by CFI-EFI
About $150.00 lighter in the wallet and a tenth of a second SLOWER in the 1/4 mile. Forget a chip, especially a Hypertech. I don't put much faith in the claims of air filter manufacturers as to the performance gains they are supposed to provide. However, the 1984 Corvette air filter fits nothing else. A serviceable filter element such as a K&N could save having to order or not being able to attain one. You can do general maintenance, cleaning, and tuning, etc. I found some performance playing with the fuel pressure and base timing. Underneath that misunderstood and oft maligned Crossfire intake lies the heart beat of America, a small block Chevrolet engine that responds to all the hop up methods as every other sbc The intake manifold is the engines namesake and it's albatross. Chevrolet deliberately choked the Crossfire with impossibly small ports in the manifold. The greatest single thing you can do for your performance is to port your intake manifold. Once it can breathe, other improvements will be able to function, to a degree.

RACE ON!!!

Why does the chip make the car slower?
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Old Dec 10, 2007 | 09:52 AM
  #29  
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Originally Posted by comp
tried to open that forum,,, i can't see any section's etc. ???
I am not sure what happended but the link works for me.
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Old Dec 10, 2007 | 10:19 AM
  #30  
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Originally Posted by elkabong
I am not sure what happended but the link works for me.
it let me in just now
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Old Dec 10, 2007 | 10:47 AM
  #31  
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L98boy, he didn't say the chip makes them slower, it's just that no noticeable gains have been reported with the GENERIC chips like Hypertech. But there are Tuners out there that can burn custom chips for individual cars that do increase performance, even on stock engines.
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Old Dec 10, 2007 | 11:24 AM
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Originally Posted by rick lambert
L98boy, he didn't say the chip makes them slower, it's just that no noticeable gains have been reported with the GENERIC chips like Hypertech. But there are Tuners out there that can burn custom chips for individual cars that do increase performance, even on stock engines.
Yes, I did say it ran SLOWER in the 1/4 mile. See post #2 of this thread and/or the quote of that post above, by L98boy. I only said so, because that was my experience. And good luck finding a tuner that will tweak a chip for a stock 1984 ECM.

Originally Posted by CFI-EFI
About $150.00 lighter in the wallet and a tenth of a second SLOWER in the 1/4 mile.
After I installed the chip, I raced my car and it ran slower under near identical conditions. I called Hypertech and asked what I might be doing wrong. After considerable conversation they admitted the only thing I had to do differently was to make back to back runs on the same day, with and without the chip. My previous comparison runs had been a week apart. I ran approx .05 seconds slower with the chip, so I sent it back.


Originally Posted by L98boy
Why does the chip make the car slower?
I don't know enough about the electronics and programming to answer that question. Hypertech could, but I doubt you will be able to get them to admit their chip makes it run slower.

RACE ON
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Old Dec 10, 2007 | 11:50 AM
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Originally Posted by tpivette
new members to the forum and or hobby wont be able to tell the difference in your technicality between stock MOTOR, and stock VEHICLE. from your post it looks as though alls you need to beat TPI cars is simply a ported manifold WITH NOTHING ELSE. this mod will NOT get an otherwise stock Crossfire CAR into the high 13s
You are right that the manifold porting, alone won't get an otherwise stock Crossfire into the 13's, that I know of. Maybe someone else has done it. Hopefully, some of my posts will encourage Crossfire owners to jump in and get their hands dirty. If they do no more research on their modifications then to read brags (not well directed help) on this forum, they deserve what they (don't) get



Originally Posted by tpivette
if your supporting mods arent a secret, why do you NEVER mention them, and only speak of the ported manifold in your list of mods? maybe youre accomplishments with the CFI wont seem as good when you include the other parts youve added to it?
If my supporting mods are such a secret, how did YOU become aware of them? Have you been sneaking into my garage at night, studying my car?



Originally Posted by tpivette
now youre just being snide with the whole tire pressure thing... id think true duals, DRs, and a aftermarket stall are a bit more noteworthy than an alteration in tire pressure
Snide? Misleading, at least, because I never vary my 35 psi rear tire pressure at all. The only reason I installed the drag radials, was because of track rules.



Originally Posted by tpivette
it is apples to oranges when you keep comparing BONE STOCK TPI cars to your exhaust, stalled, sticky tire equipped Xfire but then claim it was only your ported manifold is what beats them. if it was simply a ported manifold only CFI vs a bone stock TPI, then the comparison would be valid
The tires didn't add a thing. Before the converter, I had no wheel spin. The exhaust may have been worth a couple of tenths. The converter was worth a lot, but I was beating stock TPIs before the converter. I just wasn't running 13s without it. As for the rest of my "secrets", my fuel pressure and timing has been revealed many times. I'm sure you have them well documented. Everything not named, on this thread, including the computer and chip are all stock. I have kept no secrets and will willingly share with anyone.

RACE ON!!!
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Old Dec 10, 2007 | 04:41 PM
  #34  
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CFI, you maybe correct about finding someone to burn a chip for a stock 84, but modified I'm sure there are plenty, TJ Wong, Alvin and probably even Tequilaboy amonst others that most likely would show a gain.

Also I agree with tpivette, as long as I can remember the only thing you disclosed about your ride was porting the intake and telling members you were beating early TPIs, which later came down to 85 TPIs,....then telling forum members if they ported their intakes they could too, without telling about the other mods, including rockers. I don't get it, you continously slam members for leaving something out, or giving misinformation, so if you really want to help the cross fire guys, tell them everything upfront.
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Old Dec 10, 2007 | 05:56 PM
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Originally Posted by rick lambert
CFI, but modified I'm sure there are plenty, TJ Wong, Alvin and probably even Tequilaboy amonst others that most likely would show a gain.
This depends on how you are referring to "modified". There is no chip burner out there that will burn a custom chip for a 84. Ask me how I know. You won't even get a tuner to look at it until you've done the ecm upgrade and they are still squirmish. Most times your burning your own chips. They have come out with some creative ways though for the 84 and get yourself set up with a good tune.
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Old Dec 10, 2007 | 06:14 PM
  #36  
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So what is the DCS chip in your profile qws? You've got Dart heads, rr, cam, etc. that's what I call modified.
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Old Dec 10, 2007 | 06:24 PM
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Originally Posted by rick lambert
So what is the DCS chip in your profile qws? You've got Dart heads, rr, cam, etc. that's what I call modified.

That chip is from crossfireinjection.net. Basically there are three chips available for the stock ecm. Jet,Hypertech,DCS. IMO DCS is the best out of those three. But after my last dyno run I can tell my ecm needs some tuning. SOTP feel on the car is unbelievable but my numbers went down. So I'm at the point where I need to learn to tune. But first need to make the necessary ecm changes to do that. I will say there is a lot out there available for the 84 you just gotta look for it.
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To 1984 Corvette crossfire injection help?

Old Dec 10, 2007 | 07:08 PM
  #38  
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Originally Posted by rick lambert
CFI, you maybe correct about finding someone to burn a chip for a stock 84, but modified I'm sure there are plenty, TJ Wong, Alvin and probably even Tequilaboy amonst others that most likely would show a gain.
Reread what I said. I am not speaking of Crossfires that are unmodified, I am speaking of 1984 Corvettes, stock or modified, still using the OE ECM. Because they are not easily hacked, many Crossfire owners have swapped ECMs.
Originally Posted by CFI-EFI
And good luck finding a tuner that will tweak a chip for a stock 1984 ECM.


Originally Posted by rick lambert
Also I agree with tpivette, as long as I can remember the only thing you disclosed about your ride was porting the intake and telling members you were beating early TPIs, which later came down to 85 TPIs,....then telling forum members if they ported their intakes they could too, without telling about the other mods, including rockers.
Now I have aftermarket rockers??? Tell me, are they aluminum? Stainless steel? Full roller or just roller tips? What ratio? What did these fictional rockers do for my performance? It didn't just come down to 1985 TPIs. It became easier to support the claim, if I narrowed it down to "early" iron headed TPIs, which includes '86E. In all actuality, I don't know of any mildly modified TPI that I have raced and haven't beat. If I haven't been forthcoming with my modifications, how does it happen that tpivette is aware of all of them, and I even get credited for those I don't have, such as rockers?



Originally Posted by rick lambert
I don't get it, you continously slam members for leaving something out, or giving misinformation, so if you really want to help the cross fire guys, tell them everything upfront.
Continuously? Whom have I slammed for leaving something out? Everything has been revealed. What do you want? A "How to Book"?

RACE ON!!!
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Old Dec 10, 2007 | 08:48 PM
  #39  
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And now you want me to go back and copy,paste YOUR statement about 1.6 rockers???? are you dilusional? it was YOUR post...just tell it like it is......that way you can help the cross fire owners WITHOUT leading misleading them to believe that's all there is to it!! Porting an intake!

"Whom have I slammed for leaving something out?" Are you serious? Or do you just hit keys on the keyboard without realizing how you come off! And how many new comers you offend or run off by your tactics?(lack of communication skills). And I'll tell you one thing else....when you're wrong, your ego gets in the way and you try to defend til the end.......without ever admitting your wrong!

CHALLENGE: POST A TIME SLIP TO PROVE YOUR CLAIMS!!! I doubt if you can!
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Old Dec 10, 2007 | 09:48 PM
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I usually agree with your normally reasonable, coherent, posts, but there is something wrong with you, today.
Originally Posted by rick lambert
And now you want me to go back and copy,paste YOUR statement about 1.6 rockers???? are you dilusional? it was YOUR post...just tell it like it is......that way you can help the cross fire owners WITHOUT leading misleading them to believe that's all there is to it!! Porting an intake!
It appears you've lost it, here. It wasn't MY post that talked about my 1.6:1 rockers, because I've never had them. It is YOU doing the misleading. You seem to be more aware of my modifications then I am. If I am so secretive, how can you know so much about what I'm using?



Originally Posted by rick lambert
when you're wrong, your ego gets in the way and you try to defend til the end.......without ever admitting your wrong!
First you accuse me of posting what I haven't and here you show you haven't paid attention to what I have. I freely admit when I'm wrong. As closely as you seem to monitor my posts, you have to have read where I have. I think you're loosing it.

RACE ON!!!
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