Quote:
Originally Posted by 2forme
Visconti has noted that this kit doesn't make any discernable power between 91 and 93. He also mentioned that the 10 psi pulley didn't make much more power.
Where did you dyno it?
What other mods do you have, power wise?
What type of dyno?
Also, if you're getting detonation up high on the conservative tune from Vortech... you might want to hold off on the Perrin. Every Perrin Vortech dyno I've seen has knock up high.
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No different power from 93 to 91?? That is far from correct. My map made 250-ish to the wheels (92oct) when I gave it to Vortech. He had to remove about 4 degrees or more timing from my map to make it run safe on 91 octane. That is is roughly a 15-20 HP drop on our dyno removing that much timing.
Also the 10psi pulley didn't make much more power?? Again, that is NOT correct.
It for sure makes more power and Lance at Vortech found on the 91oct fuel, it made about 15HP more across the board. It made more on our 92oct fuel (much better fuel than the Cali 91) because we can run more timing.
REgarding knock up top? Define knock? Like pulling a degree, pulling 5 degrees, audible knock..... The tunes I have sent out (very few so far) have had nothing like this. The only one that ever had some "knock" (ECU pulling 2 degrees, nothing crazy) was a car in 91octane land at higher elevation.
I just want to be clear on those things as I don't want misinformation spread.