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Originally Posted by shiftdrift
pretty sure he's a very respected tuner/zilvia member. you're gonna need more than accusations.
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Fine.
Quote:
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Originally Posted by steveshadows
I pride myself on my timing maps, they are practically works of art,
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There's no timing change with regard to RPM. You end up running 27deg timing at 750RPM/0 psi, which is wayyyyy too much. You'll get knock pretty easily if you spend much time in those cells.
Lets move on to his fuel map:
When I got the map, it misfired terrible under boost. Coming into the image, I get on the throttle, plateauing at about 65% throttle. RPMs rise to 4800, and boost is about 7psi at this point. Unfortunately, the engine is running so rich (9.6:1) that it begins misfiring. Misfires show up as lean, which is why the AFR begins to increase as the Injector Duty Cycle holds steady. The engine holds this continuous misfire condition until I get off the gas a second later. Steve said it was because my injectors suck.
I had to trim out more than 30% of the fuel to get it right. Been great ever since, perfect AFRs.
On top of all that, Steve was more than a week late on his promise to have the map done. My gut feeling is that most of Zilvia doesn't know better - no one datalogs, most people don't own widebands, etc.
Remote tuning is a tricky, iterative process... Steve is probably a decent tuner on a physical dyno, but I am not impressed with his remote services.
Others on here have had bad experiences, too. He's far from the God of SR20s.