G-body Roll Call

[GlockandRoll]

It's an 87 GN T-top, and is stock with a few minor bolt ons that are barely noticeable to the naked eye, including the audio system.


These cars are capable of major power, even using the stock motor, my valve covers have never been off even. Here's what the performance mods include, which with a turbo car unlock it's power potential because its all about timing and boost.

For getting air into he car:

* bigmouth style cold air intake with KN filter outside he engine compartment in ambient air.





* 25psi boost controll solenoid.
* Power plate spacer that helps the increased airflow and stops the back pistons from running lean.

For the ignition:



* Chip burned to increase timing and work with methanol
* injectors calibrated for increased flow
* high output fuel pump
* fuel pressure regulator
* Methanol injection system, the factory coolant reservoir has been moved to behind the bumper and a new stock OEM one is used. (you can see he braided stainless steel line going up on he left side of he intake, that's for the methanol)



For the exhaust, the blow part:

* 3" down-pipe from he outlet side of he turbo
* high-flow cat convertor
* aluminized steel tubing with flowmaster mufflers

The reason you use methanol is for cooler engine operating temps and safety.
I could not run 25psi of boost (almost tire pressure) and then compress it in he motor w/out worrying about pre-ignition or detonation, which can blow the motor apart.
The computer uses the MAP sensor to turn the spray on progressively a 10psi, so when I'm putting around, just using vacuum and not turbo pressure, I not only get excellent MPG but I don't use the alcohol at all.

It's probably a high 11 second car on a track with sticky tires, like it sits now, low 12's should be easy... which blows the doors of most sports cars on the road today, here's a Dodge viper getting whipped by not one, but two GN's simultaneously.
http://www.youtube.com/watch?v=wlvo8J7ZBds

---- as for the stereo --- that's even more difficult to explain but I'll make it brief.
I've added a few things:

1. 91 GMC CD player (since GN's only came with cassette players)
2. 1/3rd octave trunk mounted EQ that allows me to tune he car digitally and control an iPod.
3. 600watt alpine amp under the front passenger seat.
4. pair of Focal high end neodymium mid-bass drivers in the doors in custom vinyl enclosures to look exactly like the factory concert sound speaker pods.
5. Image Dynamics waveguides under the dash for mid-treble that puts the sound stage up on top of the dash and separates the stereo image equally across the car.
6. the sub-woofer, is a vintage Polk audio C4, with 4 6x9' sub-woofers in a push-pull compound isobaric 3 chamber bandpass enclosure, it is very small and looks good in the trunk and only weighs 28 lbs but has the output of a pair of 12" sub-woofers. http://www.polkaudio.com/forums/showthread.php?t=107642

Pics of the install here:
http://www.diymobileaudio.com/forum/...l-install.html