hosrom_951

Not to start anything but i got to ask this:

Fast951: The old vitesse stage 3 was capable of making ~440whp at 22+psi boost correct?

Now, the new stage 3 hits 405whp at 24psi.......was the difference of ~35whp needed to improve the power curve? not to mention the additional higher boost?

im NOT starting anything with anyone IIRC, just a SIMPLE question

special tool

Hosrom - no, I hope to be at 450 next dyno with a cleaner AFR. My last run was very bad AFR.
I just put the stuff on and went to the dyno - literally. No prior tuning experience, whatsoever, either.

NZ951

The graph was with WG spring pressure and was 3rd and 4th gear runs plotted... The line I have with EBC is a little sharper but not much so, 1 bar at 3,200 was with 3rd and 4th gear runs also...

daniel951

when i dyno my car i plan on bringing the camera to film the boost gauge and the #'s so there is no question that i did it or not

hosrom_951

Special Tool: That would be nice, but i was considering the % gained/imrpoved for the power curve, since 90% or so of the stage 3 owners would be street driven and low boost, that's what i was thinking of, not max hp

fast951

Hosrom, SpecialTool did 405rwhp at 24psi.. He was experiencing 2 problems: (1)rich mixture, didn't fine tune it. (2) had stock exhaust and butchered cat/testpipe.
The second car did 410rwhp at 22psi...
As I mentioned in previous posts, the new Stage 3 was designed for: (1) quicker spoolup (it comes on about 500-700rpm sooner than the old stage 3). (2)To supply enough air for over 400rwhp.
Both were achieved... I have no doubt that 450rwhp and similar torque are attainable with this turbo.
Making big numbers is great, but what I like the most is the area under the power curve...
This turbo is in the sweet sport between 18-24psi.. very efficient. The same car with the new Stage 3 will be faster than the same car with the old stage 3. Now you have a larger area under the curve.

Now if you want GREAT spoolup, and high 300s HP/TQ stage 2 is the way to go... The best of both worls...

hosrom_951

That is what i was referring to


Mid-to-high 300whp at your recommended boost levels would be nice. Do you have anyone testing the stage 2 yet?

J Chen

Hey Hosrum,
Why don't you just buy one of John's turbo & be done
with it ? It's been proven & not a hit & miss turbo combo.

hosrom_951

That is my third option !!!