I have been able to get these cars to pass the emissions monitors with the stock controller. The upstream O2 sensors need to be relocated to collector, a CA approved or secondary production catalyst used and the downstream sensors mounted behind the catalyst with proper shielding.
Hi David,
Most likely your fuel pressure regulator check valve is bad,
but considering the age of the car you might want to rebuild the entire module. I can source the parts if needed.
The gaps were all over the place from the factory. You can improve on that, but it requires a lot of adjustments and removing the front bump cover to align the
radiator support.
Removing the catalyst is bad for the environment. For racing use we remove them, but a new calibration is needed to make the car perform at peak performance.
With the loss of backpressure a new fuel and timing curve is added. The downstream Cataylst monitor is removed as well.
Another note on fuel injectors. The side feed Gen 1 and 2 injectors are notorious for clogging up over time. I started by sending them out for ultrasonic cleaning, new screens,
o-rings and matching when we rebuilt an engine, but when I found the before and after cleaning flow documentation...
Jack and Dan,
Thanks for putting all this information together. In the past 25 years I've had to repair more botched fuel systems than I can remember.
I think many shops just don't understand how to build a proper fuel system for the Viper. Many systems out there work, but are a compromise.
The...
That system was developed for the Gen 3 car which had a rear crossover. On the Gen 4 cars its actually a little more restrictive than the stock system but
does not seem to hurt power. It has a deeper tone but is not loud at all. You need to keep an eye on the rear hangers, they sometimes crack.
Typically it is the blower resistor or the blower motor. Its sounds more like the blower motor to me. The motor gets water in it and rusts. When that happens it works
at times, until it freezes up.
You will need to shim the steering rack. You need to remove the shocks, unload all the control arm bushings, then check the toe change from drop to bump. Shim up the steering rack on each side for the least amount of toe change. For a 1 inch drop start with a 1/4 inch shim on each rack mount.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.