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View Full Version : got the Turbo II on a dyno today....AFRs are real real lean


Whizbang
10-25-2008, 07:48 PM
So lean we decided not to even go above 5500 in 3rd.

more specifically (wish i had a scanner) the richest i saw was 12.9.

data points below for third gear seeing max press. of 7lbs and a 6300 ft. altitude.

3172 rpm -- 15.5 afr
3592 rpm -- 14.5 afr
4011 rpm -- 14.0 afr
4430 rpm -- 13.5 afr
4850 rpm -- 13.2 afr
5269 rpm -- 13.0 afr

and we stopped there.

video: http://www.youtube.com/watch?v=HBcakMf78kE


serious lack of fueling....

WE3RX7
10-25-2008, 07:57 PM
OUCH - what #s did u make at that RPM though, lol...

Also what are you doing on the timing side as well.... 13.0AFR w/ X boost is dangerous enough, lol..

Whizbang
10-25-2008, 08:29 PM
no idea on timing. the car is stock with a 2.5 exhaust

WE3RX7
10-25-2008, 09:44 PM
Ah - ok... thats pretty nuts for only having a 2.5" exhaust, what were your boost levels at 5k?

Whizbang
10-25-2008, 09:50 PM
eh....8ish. the alt. does make for some serious lag, but i think the stock fuel system needs some revamping.

88turboii
10-26-2008, 10:09 PM
not good at all.. might want to check if your FPR line is connected. If everything checks out, swapping your secondaries for 750's ought to put you back in the safe zone

SpooledupRacing
10-27-2008, 05:06 AM
WOW.. thats high lol... yeah I think if u find to have no external problems I'm with 88turbo.. swap to 750 secondaries and hit the dyno again..