C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

First Intake Install?

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Old Jan 4, 2008 | 04:43 PM
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Default First Intake Install?

I was wondering if anyone had installed their new FIRST intake from the group buy.
I have a few questions about the install.


Thanks, Randy
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Old Jan 4, 2008 | 09:36 PM
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Default In the same FIRST boat

My FIRST question is what fuel pressure regulator to use? Was thinking this might work http://www.jegs.com/webapp/wcs/store...56927_-1_10323
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Old Jan 4, 2008 | 10:39 PM
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That regulator looks like it would work just fine. I want to get a good look at the layout of the manifold and fuel rails to see what kind of space I have before I start shopping regulators. I am considering a remote mount for the regulator if I can find a suitable place to put it.

I got an e-mail from Ken on New Years Day that they were working on my manifold. I hope to get it sometime next week.
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Old Jan 4, 2008 | 11:46 PM
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Default compiling info

Was just going to put some info here for reference later, big thank you to Bad SS

Great info from a BADSS in this discussion
http://forums.corvetteforum.com/show....php?t=1868398

The FIRST Fuel Injection website
http://www.firstfuelinjection.com/

1982 install http://ncarboni.home.att.net/NCtpi.html

Originally Posted by carson

Originally Posted by BadSS
cold-start - you'll need a new chip. Depending on your mods, you may be able to use a stock 89 chip since they don't have the cold-start injector.

Regulator - as said earlier you need an external one that'll go on the outlet side of the fuel rail - not sure on the fittings you'll need on a vette.

"short name" - if it's not the EGR (exhaust gas recirculation) valve,,, maybe you're talking about the TPS (throttle position sensor)?? You can use the original with the bracket that I believe is supplied with the FIRST purchase.

If you're talking about the IAC (idle air control) valve, the original screws right into the FIRST T/B.

If you're talking about the IAT (inlet/intake air temp),,, or MAT (manifold air temp) sensor,, on the 3rd gen f-body,,, they screw into the bottom of the stock TPI plenum. There is no provision for this in the FIRST's plenum. I spliced the wires and did a relocation mod to the air filter box - which a lot of folks do anyway on the stock TPI - Very easy to do. Some applications have this sensor in the air boxes from the factory,,, not sure about the Vette.
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Old Jan 10, 2008 | 12:24 PM
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With this intake being so good, You would think that 1 or 2 C4 owners over the last 10 years would of installed one.
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Old Jan 10, 2008 | 12:37 PM
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That looks like a kickazz system, cant wait to see how cars are running with them. As far as a TPI goes, dont see how it could get better than that. Look at those runners
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Old Jan 10, 2008 | 02:31 PM
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Originally Posted by 88BlackZ-51
With this intake being so good, You would think that 1 or 2 C4 owners over the last 10 years would of installed one.
I don't even understand how they sell them to anyone. Even 'hot rodders' only use TPI setups for looks, and they're not going to go out and spend money on this. I guess if your not gonna run a different cam, and you've got money to blow its a good intake..

Holley really screwed everyone on the HSR. Obviously only concerned with the fbody market or something. Or maybe they just think most corvette owners won't hack up the car and want to keep original.

-- Joe
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Old Jan 10, 2008 | 03:45 PM
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I heard my kit is going to be shipped this week. I took it with paint and functional EGR + some other bits.

I was thinking of this one: http://tinyurl.com/287asc but I guess the one posted above will work equally well. Maybe even better if its a compact design as there is not too much space.

With this intake being so good, You would think that 1 or 2 C4 owners over the last 10 years would of installed one.
Modding it to fit under C4 hood is a recent development. Before you needed a high rise hood.

Last edited by ToniH; Jan 10, 2008 at 05:34 PM.
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Old Jan 10, 2008 | 03:51 PM
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Originally Posted by ToniH
Modding it to fit under C4 hood is a recent development. Before you needed a high rise hood.
true but it would fit just fine under the hood of most f-bodies and havn't ever really seen on on an f car that I can remember.. I think the main reason is how much they origionally wanted for the damn thing..
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Old Jan 10, 2008 | 03:58 PM
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Originally Posted by 86GoldProject
true but it would fit just fine under the hood of most f-bodies and havn't ever really seen on on an f car that I can remember.. I think the main reason is how much they origionally wanted for the damn thing..
Yes. their original strategy was a mistake. They only marketed it as a complete kit with electronics for $3K+. This was unnecessary for most F-body and Vette people as they could use their original electronics for free. This made it $2K more expensive than most competitors.

Another reason probably is the small size of the manufacturer and little funds to market it. Holley and Accell took the market with big bucks and TPIS the rest with good marketing. Now that LPE and Accell have dropped SR there is new possibilities for FIRST but still they have the same problem: they need marketing to gain market = expensive.

I've never heard anything negative about the First and BadSS's extensive testing convinced me. Also, its the only smog legal (mandatory in my area) kit on the market which competes nicely in performance with HSR and as a bonus: without cutting my hood.

Last edited by ToniH; Jan 10, 2008 at 05:38 PM. Reason: misspelled BadSS's name
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Old Jan 10, 2008 | 04:46 PM
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Originally Posted by anesthes
I don't even understand how they sell them to anyone. Even 'hot rodders' only use TPI setups for looks, and they're not going to go out and spend money on this. I guess if your not gonna run a different cam, and you've got money to blow its a good intake..

Holley really screwed everyone on the HSR. Obviously only concerned with the fbody market or something. Or maybe they just think most corvette owners won't hack up the car and want to keep original.

-- Joe
Just a comment on the cam. NASA time trials smacks you with a 6 point hit for a non-OEM cam, which is to many points for some to be in the class they want to be in.
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Old Jan 10, 2008 | 06:37 PM
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Is ther dyno and 1/4 mile numbers for this setup?
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Old Jan 10, 2008 | 06:40 PM
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"competes in performance with HSR"

I doubt that very much!
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Old Jan 10, 2008 | 07:10 PM
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Originally Posted by ToniH
He must be confusing First to LTR's or something else? His statement doesn't make any sense any other way.

But for other readers a quick summary to avoid confusion:

First
- smog legal
- competes in performance with HSR (according to BadSS's tests)
- fits under stock hood
- accepts stock electronics
- $995 (includes throttlebody, fuel rails etc.)
- $140 for AFPR

HSR
- not smog legal
- doesn't fit under stock hood
- something like $500 i believe? + AFPR (?)
- high rise hood $1399 (Toledo, maybe cheaper somewhere?)
- paint job $500
- total $1500-2500
- if you mod your hood yourself you can get cheaper, paintwork obviously costs few hundreds if done properly. Total cost probably very close to First.

Why would you spend your money on it? It still has what, 8.5" runners?
It doesn't compete with an HSR, unless your engine is a dog combo to begin with. Then again, most of *our* tests on TGO have found the HSR doesn't flow that great out of the box anyway, but then again if you like at folks like Mike Davis who have had exceptional results with ported HSR's what are we really comparing it to?


Thats why on my C4 I run a miniram, on my fbody's I ran singleplane EFI manifolds. One I build, then one from holley designed for the purpose.

-- Joe

Pe

Last edited by Gray Fox; Jan 11, 2008 at 10:12 AM. Reason: removed comments
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Old Jan 10, 2008 | 07:11 PM
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Originally Posted by Aardwolf
Just a comment on the cam. NASA time trials smacks you with a 6 point hit for a non-OEM cam, which is to many points for some to be in the class they want to be in.
That may be true. I've always built 1/4 mile cars.

-- Joe
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Old Jan 10, 2008 | 07:35 PM
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Take it easy nobody wants tohurt anybodies feelings in here or get banned.
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Old Jan 10, 2008 | 07:48 PM
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Originally Posted by anesthes
That may be true. I've always built 1/4 mile cars.

-- Joe
I can replace the whole intake for 3 points but replacing the cam costs 6. I just wanted to make the point that the stock cam is important sometimes.

RandyJ75 what questions do you have?
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Old Jan 10, 2008 | 10:12 PM
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Originally Posted by Aardwolf
I can replace the whole intake for 3 points but replacing the cam costs 6. I just wanted to make the point that the stock cam is important sometimes.

RandyJ75 what questions do you have?
I hear ya. But if you were going to keep the stock cam, why wouldn't you siamese the stock intake that's already designed for the RPM band of the stock cam? It just seems like a huge waste to me.

-- Joe
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Old Jan 10, 2008 | 10:37 PM
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Originally Posted by anesthes
Why would you spend your money on it? It still has what, 8.5" runners?
-- Joe

Pe
Why is this intake "absolute garbage"? Mosy of us do our driving on the street and have autos. My understanding is the miniram that u tout on makes it's power up top (above 6000 rpm), where most street ,auto cars don't dwell. Sorry, but not all of us on here are only concerned with quarter mile spurts. According to the dyno #'s already posted on this, it breaks the 45-4800 infamous stock TPI wall and revs at least as well as the superram, and is hopefully easier to install. Do you have personal experience with this intake to make such a diagnosis or is this just your opinion, because it's not a miniram and therfore "a POS"? I'm all ears. I have also researched the TGO board and have yet to find a bad comment about this intake from people who have hands on experience with it. BTW, I am currently running a superram. I'm willing to give the First intake a spin and see what it does. I don't see the need to trash this intake just because it's not what you personally would use. Back to the OP's question - any problems with FIRST intake install?

Last edited by Gray Fox; Jan 11, 2008 at 10:17 AM. Reason: Removed quoted comments
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Old Jan 11, 2008 | 12:43 AM
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I have a superram(not installed yet) but maybe I should go this route instead. Where are these dyno numbers, all people say is they are comparable to the holley stealth ram
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