You guys were right, gotta PAY to play.
04-10-2008, 12:49 PM
#21
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Originally Posted by iStan
I thought 11.5 was the goal?
04-10-2008, 12:54 PM
#23
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Originally Posted by Nexx
11.5 is about as lean as you wanted is what i've always read. 
can an someone with knowledge and experience chime in on this?
can an someone with knowledge and experience chime in on this?
I'm very curious.
04-10-2008, 01:03 PM
#24
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Originally Posted by Nexx
11.5 is about as lean as you wanted is what i've always read.
can an someone with knowledge and experience chime in on this?
can an someone with knowledge and experience chime in on this?
On a built motor you have a little more leeway with the AFR's, but not a whole lot. Of course this doesn't take into account many other factors such as ignition timing. I'm a believer that it's better to tune to a slightly rich AFR (11.5~) and make power from adding timing to a few degrees under the knock threshold.
I know that many tuners that deal with other types of motors swear by tuning to 12:1 AFR but it doesn't hold true on this car.
04-10-2008, 01:46 PM
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Originally Posted by taurran
On a stock motor, that's about right.
On a built motor you have a little more leeway with the AFR's, but not a whole lot. Of course this doesn't take into account many other factors such as ignition timing. I'm a believer that it's better to tune to a slightly rich AFR (11.5~) and make power from adding timing to a few degrees under the knock threshold.
I know that many tuners that deal with other types of motors swear by tuning to 12:1 AFR but it doesn't hold true on this car.
On a built motor you have a little more leeway with the AFR's, but not a whole lot. Of course this doesn't take into account many other factors such as ignition timing. I'm a believer that it's better to tune to a slightly rich AFR (11.5~) and make power from adding timing to a few degrees under the knock threshold.
I know that many tuners that deal with other types of motors swear by tuning to 12:1 AFR but it doesn't hold true on this car.
04-10-2008, 01:46 PM
#26
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Nexx...your car is now in good hands now, and the results will be
well worth the trouble you went through. Being able to beat on the
Z's, they have to be built by one of the best. Nothing like kicking
*** and not having to worry about it.
Good luck and looking forward to your finished ride.
well worth the trouble you went through. Being able to beat on the
Z's, they have to be built by one of the best. Nothing like kicking
*** and not having to worry about it.
Good luck and looking forward to your finished ride.
04-10-2008, 02:36 PM
#29
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It sounds more like a timing issue than an A/F issue. I accidentally made a full pass on my vortech with a 13 AF ratio because the stupid air temp correction was way off. Luckily the timing was rather conservative so i didn't blow the hell up
this was with a 2.87 pulley btw
this was with a 2.87 pulley btw
04-10-2008, 03:03 PM
#30
Originally Posted by JET MECH
im at 11.5 12.0 A/F's on full throttle run's. no detonation detected but i also run 100 octane exclusivly on my stock block vortech setup at 13 psi to 14psi .
Nexx.. Humble finally.. lol.. jk.. 
04-10-2008, 05:02 PM
#37
Originally Posted by turismo
F'd up. Did you confront your tuner? What did he say about the 12:1 A/R
