LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Throttle body?

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Old Jun 14, 2007 | 06:20 PM
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White 96LT1's Avatar
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Question Throttle body?

If i am getting a 58mm throttle body for my 96 Trans Am and porting out the intake to fit the throttlebody will i need bigger injectors?

car:
mild cam 355 LT1
msd distributor and wires
headers full exaust
jet stage 2 chip
K&N Cold Air intake
etc...
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Old Jun 14, 2007 | 08:56 PM
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If you're running stock injectors on what you already have, then you'd want them anyways! Ditch the JET chip, get some 28# SVO injectors and have your ECM either Dyno Tuned or mail order to PCM For Less.
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Old Jun 15, 2007 | 07:37 AM
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yes throw the jet chip in the woods.
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Old Jun 15, 2007 | 07:42 AM
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Originally Posted by LT1MAN
yes throw the jet chip in the woods.
Or Donate it to someone here who just got an LT1 That's what I'd do.
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Old Jun 15, 2007 | 10:36 AM
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so do i need to get bigger injectors?
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Old Jun 15, 2007 | 11:00 AM
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If you're running STOCK injectors (24#) yes, you do. Those poor things are being worked harder than a, well insert whatever you want to for how hard they're worked lol

28 or 30# is what I recommend.
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Old Jun 15, 2007 | 12:35 PM
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Will that chip work for a 93? If it does you can donate it my way
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Old Jun 15, 2007 | 01:10 PM
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If you have someone to burn it, I can send you my file I made for mine. If you don't have emissions I can leave all the AIR and EGR off, or turn it back on if needed. I'd recommend getting 24# SVO's though, because w/o a tune I noticed throttle response with them.

EDIT: Wait a second, a 96? You don't have a chip! Only 92 and 93 LT1s have chips lol 94+ have EEPROM (Electrically Erasable Programmable Read-Only Memory), which means they get tuned by a power programmer, or a computer (Your own laptop, a dyno tune) because they are a permanent chip in the PCM. Which, PCM is also a new term for 94. Powertrain Control Module, since it controls the transmission as well. 92 and 93 is ECM, Engine Control Module.

Class dismissed

Last edited by Formula350; Jun 15, 2007 at 01:16 PM.
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Old Jun 15, 2007 | 05:39 PM
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so if i were to get 30lb injectors, would i have to get a tune?
is a mail order tune worth it? (175) will it work?
or should i go get it dynotuned for $350?
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Old Jun 15, 2007 | 07:11 PM
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i dont have any emmisions on mine, that is why i have code 26 right now. And i can get get someone to burn it
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Old Jun 16, 2007 | 02:18 PM
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Originally Posted by White 96LT1
so if i were to get 30lb injectors, would i have to get a tune?
is a mail order tune worth it? (175) will it work?
or should i go get it dynotuned for $350?
I assume since you have "every bolt-on there is" that you have a tune. If you bought the car how it is, then it's a good bet you already have bigger injectors. My first mod was injectors! Even though I already had them. If I was going to install headers, heads, cam and so forth, I would've already had my PCM tuned and injectors ready to install at the same time.

If YOU installed everything and know the injectors are stock, and for some reason haven't had your car tuned, then I'd say it'd be better to get it dyno tuned. If it's been tuned previously, send it out for a mail order.

Originally Posted by litch2004
i dont have any emmisions on mine, that is why i have code 26 right now. And i can get get someone to burn it
You PMed me saying code45 and here you say code26. Which is it?
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Old Jun 17, 2007 | 10:05 AM
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It is 26. Not to sure why i put 45. I was a little um... pre occupied.
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