Jan 31: Tuning Day w/ Christian & Brian @ APH

[Fobio]

Street logs...

[-cj-]

What gear? What are your actual g/s? (the actual number). Weren't you hitting 300 on the dyno?

[Fobio]

What gear? What are your actual g/s? (the actual number). Weren't you hitting 300 on the dyno?

always 4th gear. max maf is ~285 - 290g/s on this log, but this figure is very temperature dependent (I've hit into the high 290's when it was -25*C outside)...so it doesn't hit the actual whp figure on a dynapak...maybe a mustang dyno? lol...which explains why Cobb uses one...

[-cj-]

Great numbers either way! I think I fixed my stuff finally and found the clamp around my inlet hose lose. Feels like everything is coming apart lol. Need to invest in Loctite! Car still doesn't backfire during hard accel gear changes, like it did after the tune. Does/ did yours? (Forge V2). Hope to get some logs tomorrow.

[Fobio]

Great numbers either way! I think I fixed my stuff finally and found the clamp around my inlet hose lose. Feels like everything is coming apart lol. Need to invest in Loctite! Car still doesn't backfire during hard accel gear changes, like it did after the tune. Does/ did yours? (Forge V2). Hope to get some logs tomorrow.

My adjustable Turbosmart has been great...and it's likely running on the tighter side, so no back-fires ever...well, sometimes when it burbles in lower RPM puttering around the underground garage, and faint. With the new tune, and the fixed leaks, you might want to run a higher pressure spring now. =) Great stuff Jerry!

[MajesticBlueNTO]

street log, 3rd gear

[taz4432]

You're pushing close to 40lb/min of air which means your probably putting high 300's down at the crank. Not bad...not bad at all.

I've been showing this thread to a few DSM buddies. I know a couple are going to start reading more into boost-based tuning and study it more thoroughly. It's definitely an interesting concept.

How are you guys finding the tunes after the first 2 weeks or so...?

[MajesticBlueNTO]

street log, 4th gear 5C outside temp (since i can't edit the 3rd gear one posted above, it was -5C outside temp for that one)

[Fobio]

that smooth log is definitely something to write home about...EBCS when?

[MajesticBlueNTO]

Boost Air Temp in this log was 20-30F higher in this log (in the 100F range vs 70F-80F). As expected, g/s went down with the BAT increase...also, boost went up compared to my previous logs: