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

Ok what next guys?

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Old Apr 4, 2011 | 11:28 AM
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Default Ok what next guys?

This weekend I installed my system and it is set at 100hp right now. I need to get some drag radials and then I am off to the track again. If you look at my profile you can see my list of mods so what do I need now?





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Old Apr 4, 2011 | 11:33 AM
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Munstermobile switch?
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Old Apr 4, 2011 | 11:46 AM
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an intake manifold.
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Old Apr 4, 2011 | 12:17 PM
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Up next would be 150 shot

Post some numbers/video of the runs at the strip as you use the "juice".

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Old Apr 5, 2011 | 10:01 PM
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Originally Posted by pr0zac
an intake manifold.
I port matched the intake and opened it up, I stretched the runners with those steel ***** and opened up the plentum. When I was done with that I had it extruded honed and all of it tumbled for 6 hours.


Right now I am running a 75 hp shot with 6* of timing and I have not had any detonation yet. I have not gone bigger because I do not have drag radial tires yet
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Old Apr 5, 2011 | 10:43 PM
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you will be able to spray in second on a 100 shot without drag radials.
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Old Apr 6, 2011 | 12:51 PM
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Originally Posted by pr0zac
you will be able to spray in second on a 100 shot without drag radials.


I spray a 125 shot after its several feet off the line. I like to take it easy on the dana 36. I'm using sumitomo street tires with a 2800 stall. I get 1.8 and 1.9 60's. Traction doesnt seem to be too much of an issue when hitting the nitrous either.
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Old Apr 6, 2011 | 01:15 PM
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Originally Posted by rickreeves1


I spray a 125 shot after its several feet off the line. I like to take it easy on the dana 36. I'm using sumitomo street tires with a 2800 stall. I get 1.8 and 1.9 60's. Traction doesnt seem to be too much of an issue when hitting the nitrous either.
how much timming are you pulling out? are you using a throttle micro switch? Are you just clicking on the system after you shift into second gear?
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Old Apr 6, 2011 | 03:40 PM
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Originally Posted by Crowhater
how much timming are you pulling out? are you using a throttle micro switch? Are you just clicking on the system after you shift into second gear?
The timming is being pulled in the tune. I have an NA tune and a N2O tune I switch between. I'd have to check it again but I believe the timming has about 5 or 6 deg pulled on the N2O tune. I have a Zex dry kit. It has a management unit that helps protect against lean/rich conditions and also only activates if the TPS is reading 100% throttle. I usually flip the switch right after the 1-2 shift.

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Old Apr 6, 2011 | 03:43 PM
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Originally Posted by rickreeves1
The timming is being pulled in the tune. I have an NA tune and a N2O tune I switch between. I'd have to check it again but I believe the timming has about 5 or 6 deg pulled on the N2O tune. I have a Zex dry kit. It has a management unit that helps protect against lean/rich conditions and also only activates if the TPS is reading 100% throttle. I usually flip the switch right after the 1-2 shift.

So who did your tune? What do I need to get to be able to do my own custom tune?
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Old Apr 6, 2011 | 05:33 PM
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Originally Posted by Crowhater
So who did your tune? What do I need to get to be able to do my own custom tune?
With my 95 LT1 I am able to reprogram the PCM. I had a custom tune done by PCMFORLESS. They email me the file and I upload it to the PCM from my laptop using TunerCat and an OBD to USB cable. I use Datamaster TTS for Datalogging and troubleshooting. I believe with your 1990 you will need a custom chip sent to you. If you are interested in burning your own chips the place below should have all the stuff you need.

http://www.moates.net/gm-obd1-pre1996-c-64.html

Ask about this one here.
http://www.moates.net/apu1-autoprom-....html?cPath=95

Last edited by rickneworleansla; Apr 6, 2011 at 05:39 PM.
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Old Apr 6, 2011 | 06:35 PM
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[QUOTE=rickreeves1;1577273173]With my 95 LT1 I am able to reprogram the PCM. I had a custom tune done by PCMFORLESS. They email me the file and I upload it to the PCM from my laptop using TunerCat and an OBD to USB cable. I use Datamaster TTS for Datalogging and troubleshooting. I believe with your 1990 you will need a custom chip sent to you. If you are interested in burning your own chips the place below should have all the stuff you need.

http://www.moates.net/gm-obd1-pre1996-c-64.html

Ask about this one here.
[URL="http://www.moates.net/apu1-autoprom-package-usb-versio54.html?cPath=95"]http://www.moates.net/apu1-autpackage-usb-version-p-54.



Thank you!

I have a PCM chip right now but I want to know my tune is 100% for my car not just ball park. I am going look into buying the bottom one you linked.
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