Quote:
Originally Posted by flipm3
Looks like the end results are very strong. Sorry, I am still confused on which runs are which.
Would it be possible to signify which are which on the latest dynos posted by Shiv?
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Sure. Blue=original tune, Green=Stock tune, Red=Procede tune w/PWM Meth
Quote:
Originally Posted by M3DCTBT
The problem is quite simple: I had that AFR problem / curve with my stock tune almost exact to that OE AFR. It was based on a primary 02 fault I was experiencing. I had to clear the 02 fault first. When that lean the car will lose a ton of power from timing retard. I rectified the issue and it's a brand new car.
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We were all a little stumped by the first runs. I even checked for/cleared all codes. Even did a few DME resets and logged lambda. Both bank1 and bank2 were on target and running ~15.x AFR under load. So we definitely weren't dealing with a bad sensor.
Quote:
Originally Posted by whats77inaname
Glad to see you're coming to Texas, Shiv. We run 93 octane down here, and I'll be interested to see the results of a 93 octane-based tune.
Is the windshield cleaner fluid bottle used to house the meth mixture?
BTW, I'm sure I'm not the only one curious about pricing
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Yes, we are using the windshield water bottle for the meth/water mix. Should have pricing finalized after the Texas trip.
Quote:
Originally Posted by shay2nak
If I were you I'd stick with the green HP curve. That's the only one that has a correct A/F ratio.
You're getting the extra power from the red curve by running it lean.
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There really is no "correct A/F ratio". But rather a correct one based upon supporting mods/conditions. In the case of the Procede/PWM meth combo, the operating conditions change dramatically: Intake air temps drop 40-50F and effective octane jumps to 100+. So targetting a slightly leaner AFR is perfectly safe and desirable. It's also worth mentioning that dropping AFR targets down to ~12:1 only reduces power by 6-7hp. Most of the power gains come from the IAT drop and substantial ignition timing bump.
Regards,
shiv