Hey, guys this is my first post and I have some questions regarding my set-up.
I have an 03 Evo with a Vishnu Stage 0 Mail-in. (xflash and cat-back on 91 Octane) With the colder weather this time of year in AZ I have been getting higher boost levels (22-23psi) on my Defi D boost gauge, so I decided to get the car dynoed at a local shop here in AZ. Here are my questions:

1.) Is this boost level of 22 psi confirmed by the dyno too high?
2.) Are these HP (242) and TQ (246) good numbers for a mail-in xflash stage 0? It seems the torque is much higher than the sample graph on the Vishnu website for a Stage 0.
3.) Do the A/F ratios look ok?


Thanks for any feedback! I am very pleased with the car and Vishnu!

 

<-cant really answer your questions, but Im sure someone here will.......but anyway, I would be very happy with those numbers.

 

Nice looking curves - that boost dip is a little odd, maybe someone form Vishnu can speak to that, but it doesn't seem to have hurt your torque there.

22psi is not too high.

Which sample graph are you looking at on the Vishnu site?

A/F's look great.

 

Looks fine to me, it is what I expected to see and the #'s are consistent.....
Is this 91oct?

 

Thanks for the comments guys!

ez76 - I was referring to their Stage 0 map. This one. It looks like the torque on the Vishnu graph is much lower than mine. Am I reading this right??

Dyno4mance - yes, it is 91 octane.

Dyno4mance, what range do you typically see for Stage 0's as far and HP and TQ?

 

Oh, and I don't know if this matters, these were the conditions of the dyno session:

Temp was 69 degrees, humidity was 20% and BAR was 28.7.

 

This was my Stage 0 EVO custom tuned by shiv at Dyno4mance.

http://www.dyno4mance.com/tuning/you...ges/no_vid.php

 

If you look at the power curve it is really around 230 whp...it peaks in one area..
Dynocomps dyno dynamiics reads a little higher than Vishnus and mine...
We will see as much as 245-250 on a stage 0 with Xflash....about right on 93 octane

 

Thanks for the comparison Event-horizon. From the info you guys are giving me, I didn't get a weak evo considering it's on AZ's crappy 91 octane and I don't have a down pipe.

 

remember that this was before the dyno was calibrated we need to correct the peak # by multiplying be 1.07 which brings the peak to 248.3.....hope this makes sense

 

243 * 1.07 = 260whp on pump Stage 0? right?

 

I would be really happy if I were you, revolagoy. Boost looks good, A:F is safe, and you're peaking in the appropriate places.

 

yes.....but again, the peak is a bump...not really consistent...it actually averages around 250

 

Look solid to me.

 

this is what I would consider a nice smooth power and torque curve IMO