1996 lt1 corvette 24 lb stock injectors or 24 lb ford motorsport fuel injectors with a 85 tpi? I still do not have the ecm or harness and know I will need a chip/tune to match what ever I get.

I am changing my 383 stroker(carb) to a tpi setup. The cam is a comp cam 292h 501/501 and the heads are cast iron with isky 550 springs and 1.6 rockers.

I am new to the whole tpi setup but have read that 24# should be good to go with my engine.

Any advice and info would be great!!!

Thanks, Chuck

 

They will work fine I'm using LT1 injectors in my 88.

 

Good deal. Beautiful SLP runners 88421VETTE!!! Did you have to program a chip for your ecu? Where do you get this done at? Does it have to be burnt/bought/programmed?

 

The one thing to keep in mind is ford rates their injectors at 38 or 39 lbs pressure. The LT1 injectors are rated at 43.5 lbs pressure. So in reality the fords will flow more fuel on your vette if both are 24lb injectors.
As far as programming goes I have had great luck with www.pcmforless.com As a matter of fact it has been the only mail order tune that has worked properly for me. Sent them a e-mail about the injectors as well. They are very helpful and can give you some good advise.

 

I haven't had a chip burned yet for some reason the 406 I installed won't turn I think the machine shop put the rods in wrong so I have to pull it back out and reassemble it.

 

88421vette, before you settle on that chip tuner, think very carefully after reading this:

http://forums.corvetteforum.com/show...47&forum_id=82

it will open your eyes.....wide

here's another, less incriminating one but nonetheless very apparent:

http://forums.corvetteforum.com/show...84&forum_id=48

there are more.....just do a search.

 

He sold me a chip that was junk. Only made a couple changes in the tables from stock. In short it was a $400.00 fan switch after shipping back and forth 3 times. Ran way to rich at idle and part throttle. Course that is what you can expect with a hotcam and a stock chip. Before anyone uses him, do some research on this forum about his chips. Also check other forums such as TGO You will see I am not the only one ripped off.

 

93ragtop is entirely correct.

also, one will find out Jesse Azzato's mode of operating when it comes to communications is HORRIFIC. this is not a joke and its not a drill. this is not opinion, this is fact.

i suffered $4k in engine damage attributable to ski_dwn_it tuning, or should i say, lack of tuning. he sold me the same garbage and i was dumb enough to trust him.

this guy is NOT a professional, he is a hack. he has made about alot dough from people on this forum, to feed his drag racing hobby.

trust me, you don't want to go to a guy who hacks chips for a hobby, and has the ***** to charge good money for it. by the way, his post-support SUCKS. the only way you'll track him down is to call his house. otherwise, you'll be hanging in the wind.

with all that said, i will also say that ski_dwn_it is a very nice individual. there is no doubt about this. but...........he will blame everything else in the book if there's real trouble, and will NEVER take responsibility for admitting he's susceptible to making a serious error.

by the way, there were NO fuel adjustments made in the part-throttle table in the hack job he did for me either. it was a cookie-cutter job that took probably 5-10 mins. to do.......i should have realized this when i found out that he all of a sudden pumped out approx. 4 chips in about a day, one of them was mine......realize this is from a guy who will tell you he really he is so sorry he didn't see this email or that PM (and hardly ever responds) due to very little extra time because of "all his other responsibilities"........big red flag right here

again, NOT a professional, but a home hobbiest who thinks he's a professional.

i just wish i would have realized all this from the beginning.

if you need a mail order chip, may i instead recommend going to someone who literally makes it his business to do chip tuning, not an after-school hobbiest......your investment is worth more than that.

 

i forgot to mention that the timing curve in the main spark table applied more to a factory setup than one with a full complement of N/A mods.......this was as bad as the utter lack of fuel inputs that in lower VE table that starved the engine & broke the lands off 2 pistons.

i couldn't even get a competent base tune to start off from.

 

I really want to thank you guys for sharing that info with me so who would you reccomend for a good tune?

 

Thanks for the info. It is going to help me out big time!!!

 

It only stands to reason that NO mail order tune can be better than a compromise at best. I found an awesome tuner who instead of charging a flat rate, like so many dyno shops do, charged by the hour. I gave him carte blanche and 3 1/2 hours later I had 37 more HP and an extremely driveable car that gets even slightly better than stock mileage. And it was $!00-200 less than any of the flat rate quotes I got.

 

I reccomend www.pcmforless.com I got their mail order and it was very close to what his dyno tune was, which he did a month later. I think I picked up about 7hp with the dyno tune. His prices were much more reasonable as well. Im trying to pull from memory but I believe the mail order tune was about $150.00 and then the dyno tune was $150 & dyno time which was $75.00 an hour.
I would agree that a dyno tune would probably be the best if you have someone who is well experienced and close by to do it. That being said, there is a lot that can be done by mail order by a highly experienced person. For example, my car which has ported heads, hotcam LT headers, stock injectors, stock throttle body. A very common setup. A experienced tuner has done several of these and will know what it takes to make it run. In my case mine ran 355-356 hp with the mail order tune, got 362 with the dyno tune so you can see it was very close. I know there are some people that are down on mail order tunes, but IMO a lot of this bad rap has come from poor service from some of these self proclaimed professionals who are selling their services and dont have a clue on what they are doing.
If you think about it one car is tuned at the factory and then that tune is used in the production line. They are not individually dyno tuned. For the small gains it just isnt cost effective.
For me, the most important part of a tune is to get someone who will work with scanner readings (such as datamaster) and get your car to run well at part throttle and idle. This may require mailing it back and forth a couple of times but a good mail order tuner will be willing to do this.
I really believe you are doing yourself a disservice if you dont e-mail pcmforless and ask your questions about the injectors and other questions that you have even if you dont use them for your tune. Direct your questions to Alvin and he will give you a professional opinion and he is not the type to blow smoke or put pressure on you to buy his tune.
Oh, one other point I wanted to make about a dyno tune, and that is unless you are lucky enough to find someone such as TJWONG that has a mustang dyno and can vary the throttle on the dyno to tune it, a normal dyno tune will only effect full throttle performance. All part throttle and idle tuning has to be done with data scans etc.

 

What kind of setup does one have to have to put in 36, 42, or even 30 pnd injectors in? Just wondering!!!

 

Most reputable tuners charge the same price.

Go cheap, then get expensive.

I've noticed lot of Corvette members are looking for low ball prices, services. Why is that?

The reputable companies that provide services, parts, etc. have spent a lot of money developing their products. They are not charitable orgs. and deserve a little profit. No profit, no company.

Advice, stay away from the $1.00 per horsepower guys.

 

Shop around and check with people in your area who have had work done. Around here More Performance has a great reputation and I've not heard anything to detract from that. However, after they never returned my calls for several days I found this guy. He was recommended by my local speed shop guy, who is also a very helpful and knowledgeable fellow whom I trust. This tuner is a one man operation with a dyno (of course) and is a bit of an eccentric. However, he takes his work very seriously and was not satisfied until he felt he had gotten everything he could get from it within the parameters and criteria I had given him. I definitely got a lot more than just WOT performance. This guy tunes everything you could imagine. Some of his work holds records at the Bonneville salt flats, etc. Quite a character and I look very forward to visiting him again after the new stroker is in. BTW, total price was $350 and it was DONE! More Perf. wanted $450 flat and I really doubt they'd have spent half the time on it. Dragon's Breath wanted $550 but he's three hours away anyway, so that was an easy decision.

 

Dont mean to be But ask your tuner. My combo is at its limits with the stock injectors. I could use something a little bigger. I may go to the 30. since I am at my limits now. In the upper rpms I am at 13.1 or so on the dyno with a wideband reading. This is on a 350 motor so you may need more fuel then me. But a good tuner will be able to advise you.
As far as 36 or 42 go? A big source of people who use them run superchargers. I have a friend with a 93 mustang and its amazing the size injectors they run.

 

I just upgrade cam/head/bottom end/24 fms/...... blah....blah
and burnt the chip from both ski and pcmforless,
pcmforless ultimate in chip burning iam very happy with alvin's work
just installed fuel pressure and A/F ratio guages reading 45 at idle
and 45-51 while driving driving extremely good with smoke or nothing
unusual worth $150 every dollar no doubt.

sami.

 

I may go a tad bit higher then 24# injectors but am not planning on a supercharger!!! As of now the engine is around 450hp and that is where I kind of want to keep it. Switching over to TPI to make it smoother and hopefully more quite....plus better gas milage.
Once again.....thanks for the info