Vishnu Stg. 2 vs. Slightly modded EVO

[jmussetter]

How does your car react (mapping wise) with the cutout closed v. open. Is boost and all that good stuff ok in both positions? I have been considering a similar route, but am worried that it might be a tuning nightmare ending in compromise...

So far I'm running on the base Stg. 2 map so I'm not sure how it's running. I've been running the boost @ about 15psi while I have the Qtec off the car to compensate for the stock muffler. With the Qtec open, I run the car at 17psi which is what Vishnu recommended. I am planning on getting the car dyno tuned by Shiv as soon as get my Valve repaired and reinstalled.

As for the tuning nightmare, I am going to have the car tuned for the valve wide open since that is how I run 99% of the time. The only time I close my dump is when I'm within earshot of the police....soon as their outta sight it's wide open again. If it's tuned for wide open, as long as I don't go WOT with the valve shut, it shouldn't cause any problems. Besides, if you're gonna go WOT, you'll def. want the Qtec open...it's music to the ears!

-jason

[modvp]

Did you run the EVO at 15 psi of boost ? Great run!

[jmussetter]

Yes, it's set at about 15 and creeps up to 16 or so by redline (because of the non-bellmouth design)...

I was running it this way when I raced the Evo.

-jason