AFR was 12.0 it was 100 degrees out and that was on a long stretch of road.. i just posted a track run. I hit a 12.2 NA with a 1.8 60' i spun a lil off the line because I had the shocks pretty tight.Originally Posted by waterbug1999
AFR was 12.0 it was 100 degrees out and that was on a long stretch of road.. i just posted a track run. I hit a 12.2 NA with a 1.8 60' i spun a lil off the line because I had the shocks pretty tight.
Texas speed ls2 402, performabuilt 4l60e, 3600 stall,
Zex Nitrous kit, BMR Torque arm,BMR LCA'S, Relocation brackets.
best time all motor 11.8 with a 1.6 60' at 6800' DA.
gotcha... I see your IAT's are 110* +.
12.0 A/F on the jug is fine IMO.
I did see that N/A your TB % is at 97% and on the jub its 100%.. I wonder why?
Whats your elevation?
1999 Trans Am. 10.71 @ 126 - stock bottom end-
3850 it was way hot out.. kicked my azzzzzz....
Texas speed ls2 402, performabuilt 4l60e, 3600 stall,
Zex Nitrous kit, BMR Torque arm,BMR LCA'S, Relocation brackets.
best time all motor 11.8 with a 1.6 60' at 6800' DA.
the iat's are something i have had trouble adjusting/.. the tuner wanted them around 60 i couldnt get them below 75/90 im not sure why..
Texas speed ls2 402, performabuilt 4l60e, 3600 stall,
Zex Nitrous kit, BMR Torque arm,BMR LCA'S, Relocation brackets.
best time all motor 11.8 with a 1.6 60' at 6800' DA.
The IAT is the temp of the incomming air.. Not much you can do about that.
Last edited by waterbug1999; July 20th, 2009 at 04:52 PM.
1999 Trans Am. 10.71 @ 126 - stock bottom end-
I was thinking air counts. they are way high also.. I have tried setting and resetting them time after time to get the idle right and I have it doing ok sometimes but other times it will idle to 25 mph.
Texas speed ls2 402, performabuilt 4l60e, 3600 stall,
Zex Nitrous kit, BMR Torque arm,BMR LCA'S, Relocation brackets.
best time all motor 11.8 with a 1.6 60' at 6800' DA.
WOW an LS2 402 CU inches W/NOS, What is your fuel Pressure?
Hey Guys,
It is my experience that 402 is a pretty hot motor all by its self and I would think a new RX-C5-FPKG Racetronixs fuel Pump System is needed along with larger injectors (maybe 42 LB) and an adjustable fuel regulator with a gauge, especially since you are spraying a healthy shot. I am not to sure about the stock fuel pump in LBs per hour but last I checked you should be pulling to much horsepower for that. May be I came in a little late on this thread but it is always better to be safe than sorry. It is not that expensive as compared to a new motor now that you seem to have the NOS setup right. You can upgrade the fuel pump and cheat a little more out of your injectors but with the NOS + gas added it makes me nervous for you.
I have never sprayed but do know a guy who toasted his LS2 402 from fuel starvation with a 150 shot of NOS in a Camero. I think he even had the same NOS brand as you do.
Good luck and I will cross my fingers for you as you have already received some great advice from these guys. It is possible that your maf could also been damaged from the NOS hitting the MAF elements and do not know it yet. Those are very sensitive to anything but air going across them.
Regards,
98 tigershark
98 tigershark
L92/427 w/L76 CC'ed heads n upgraded springs
4.100 stroke, 4.068 bore w/ 11:1 comp
Cam, 591 int, 613exhst, 232-246dur@.050, 115*
LG headers, High flow cats,
RPM level 5 trans, RPM 3.42 gears, 2800 rpm trq convrt. .
Special Thanx to Joe and Bruce!
Hey there, never to late. I agree and have been talking to some friends here at home. I'm putting in a after market fuel pump and a fuel pressure gauge as well as a fuel pressure cut off. I have parked the car for winter till I can get all the safty stuff I need to make sure the engine will live. Thanks for any and more info you have. is there any way to tell if the MAF is messed up a little?
Texas speed ls2 402, performabuilt 4l60e, 3600 stall,
Zex Nitrous kit, BMR Torque arm,BMR LCA'S, Relocation brackets.
best time all motor 11.8 with a 1.6 60' at 6800' DA.
Posting Permissions
Reply With Quote