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Supercharged 1999 GTS ACR - I finally got my Viper on the dyno so I could do the fina
Old May 31st, 2020, 01:23 PM   #1
TT_6SPD_95
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Supercharged 1999 GTS ACR - I finally got my Viper on the dyno so I could do the fina

I have been chasing belt slip issues for a while now and I just got done installing the new grip pulley, green HD belt and Doug Levins belt tensioner assist piece and all is good now even without touching the belt tensioner assist once after installed. I'm sure I'll need to tighten a little bit soon as the belt should stretch to a point...maybe it will make another pound? Not sure.

The "really rough" pulley's don't do as good btw. If anyone needs help with belt slip on their supercharged Viper I have many pointers now! 🙂

Anyway, I got the car on the dyno and did a pull and the car was actually making a lot better boost now which it has NEVER done yet, so onto the tuning!

Now that boost was consistent I tuned the car the rest of the way and it made 1,007rwhp/1,021rwtq at 14lbs of boost. It actually makes boost now to redline instead of dropping off. Compared to the last time on the dyno the car gained 220rwhp at 5,800rpm and around 100rwhp at around 5,200rpm as boost does much better now at upper rpms's...especially 5,500+rpm!

Now it's ready for the street. 🙂
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__________________
Tony

1995 Toyota Supra - [email protected] on the brakes w/950rwhp
1,130rwhp/875rwtq w/GT4582 Turbo No Nitrous

1999 Dodge Viper GTS ACR - [email protected] - Stock
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