the cursor is at peak boost around 8-9K rpm

 

What are your mods?

"Most" setups I've seen, are around 11.4-11.8 on street cars.

 

lovefab minime mani, modded to be open dump
BB 60-1
id1000's
AEM V2

all the other standard stuff

 

Just remember that ur tuner prob tuned with a much more expensive and likely accurate wideband than what you may be using. Street tuning based on ur wideband vs. The tuners can be hazardous. That said, that may be approaching 9.5-10. Hard to tell with the accuracy of your data plot, but just be careful changing anything. Tuner will know best.

 

Maybe, but I took my car to a tuner and he installed the sniffer in the tailpipe and it read a "lean" spot that did not exist when reading from my PLX wideband. He tried to richen up the mixture and put the injectors as far as they would go between about 2500-5000 rpm and his sniffer still read lean while my plx gauge said he totally screwed up the AFR. He told me he could not fix this mystery lean spot but made it as rich as he could. When I left the car bogged, popped and mini backfired at just slow under the radar speeds. It was almost undrivable. And this guy was highly recommended around town.

I don't know if it was his fault but his equipment was way off. I flashed back to the base tune for my kit on the way home and it ran perfect and have been using basically that tune without issue for 6,000 miles trouble free.

My "cheap" wideband installed in the header was far more accurate than his expensive sniffer at the tailpipe. Not saying thats going to be true in all cases but expensive ones can break too.

 

Tailpipe sniffer is not at all what I meant. Everytime I have had my car tuned, they install a wideband in the testpipe. This is the best way to tune. I have seen people get home and using their AEM wideband, decide that the tuner made it too rich, and lean out their tune, only to detonate/grenade an engine. My point was to just be careful. Talk to your tuner.

 

What he's saying is that if you go to T1 Race and Tony Palo tunes your car he uses a Motec Wideband that costs about $2k and is way more accurate than the aem sensor. No mortal man needs a motec wideband but when you tune cars every day it pays for itself

 

Exactly.

 

Samething my tuner had hella expensive

But good stuff

 

Motec O2 might be good but their EMS systems are garbage! Can't even count how many muscle cars came into the shop running like crap on those systems, tuner goes to tune them, has it running decent, then half hour later the car barely runs. Throw in a Big Stuff ecu and the thing runs flawless