That was an early map and a second gear pull. Due to the rapid increase in local traffic and law enforcement most of my tuning has to be done in 2nd gear now
Spool has improved through some tuning and in 4th gear it spools a lot faster. However, i don't have any logs of a 4th gear pull because, quite frankly, i'm scared of the speeds the top of 4th gear would put me.
I'll make a new thread later when i get the dyno charts and a few hours of sleep(lol) but i figured i'd share the results today from the dyno session with Jake.93 octane + 100% meth(1.0 and .9 nozzles)FBO + VTT stage 2 "baseline" 305.5rwhp 312.2rwtqMy ATR map 459.9rwhp 494rwtqJake's map 472.3rwhp 498.4rwtqThis is a "daily driver" map. 19psi peak tapering to 15psi at redline. Nothing super aggressive and the curves are absolutely beautiful. We made those numbers after SEVERAL 4th gear pulls of playing around everything still looked spot on. Unfortunately, after that many pulls heat soaking was becoming a serious issue and the curves looked so good we decided to call it quits there. Once cooled back down the car may pick up a little more power but we didn't have time to let it cool down. I didn't have any e85 to mix so those numbers will just have to wait for another time.Just from what i've seen of other cars on the same dyno the VTT stage 2s must provide a little "bump" even on stock mapping because Jakes car(and others) make 260whp baseline on that dyno when stock... but that's neither here nor there.
Nice! Please post logs of your 460 vs 470 pulls. "
Did a good 10 runs or so at the 1/4 track, one of which had a hard pop during launch. I got ittermittant wheel hop on a run, but nothing bad. On the last run, I could hear a loud hum at the too of third and into fourth gear.
When dirving home I noticed at low rpms there is a vibration and an audible him throughout the RPM band.
I've mounted the center bearing upside down on the frame on my old car (e92) and it feels like that vibration, just not as bad (but just as audible). I put the car on jack stands and can't visually see anything wrong with the rear axles, diff, or diff output.
Any ideas on how to diagnose this and what could be wrong? "
Originally Posted by rader1
