Do these numbers looks right

[SteveMat]

I had my 97 GTS dyno a couple weeks ago and am wondering if the numbers look right. It was done on a Dynojet 248h.

Third pull was the best at 432.03 @ 143mph.

Mod's include Belenger Header's, Snake-Oyl catback, K&N/Smooth Tubes, and aluminium flywheel.

Thoughts on the above numbers, I was thinking they were a little low but I happy with 432...

I do have a soft copy of the results if anyone is interested. The A/F mixture looks good (that I can tell).

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[Bill/APEX Motorsports]

Steve, there's nothing wrong with those numbers! Is that with stock cats? High flows? No cats?
The only real way to tell how much the mods increased hp is to do a "before" dyno as well. The '97s respond really well to exhaust modifications.
Assuming a 15% driveline loss, that's 508hp at the flywheel. Not bad! Congrats.

 

[SteveMat]

Thanks for the feedback Bill. To be honest, I don't know what the cat's are - they are there as I pass emissions (I assume they sniffed when they tested last time). I guess I will call the original owner and see about the cat's, unless anyone has a good idea of how to "easily" check...

 

[onerareviper]

You could remove 1 side sill (Rocker panel) to see the exhaust system. Very easy to do, should take under an hour your first time. If memory serves, 4 bolts on bottom and 6 bolts on top. Is that Snake oyl a 2.5' or 3' system? Looks like a 2.5 inch. Sounds like you are in great need of some high flow cats and 3' exhaust system. You may be shooting yourself in the foot with great headers and a 2.5' exhaust.

This link will be VERY helpful.

http://www.viperclub.org/menus/index_how_illup.htm

Then click on (3" Corsa Install).

Later

 

[SteveMat]

That is a good idea, I'll pull them off next weekend, didn't realize it was that easy to get the side sill's off...