Need Help - Injector slope and WOT
Thread Starter
Registered User
Joined: Apr 2009
Posts: 5
Likes: 0
From: North Carolina
Need Help - Injector slope and WOT I have a 2000 Camaro z28. I used the Diablo Predator to check my long fuel trim and it was 25% over. I then changed the injector slope to -26 to compensate for the difference. From a stand still, and general driving, the acceleration and power improved. However, if I am rolling along and "floor" the accelerator (as if to pass another car) the RPMs shoot up to 6000-6500 for a few seconds with no change in acceleration(like I put it in neutral); then it feels like it slowly engages and I speed-up. It feels and sounds exactly the same as when you stomp it from a stopped position and you have to wait for the tires to stop spinning and catch traction to go forward, but the tires aren't spinning. (Which having the power to break traction at 65mph would be nice I must admit...lol) Does anyone know what caused this or how to fix it? I theorized that maybe it was too rich at WOT since the change and I should lean it for WOT but the car does fine with WOT from a standstill... kinda just guessing now.
Thanks in advance,
Jason
Thanks in advance,
Jason
Thread Starter
Registered User
Joined: Apr 2009
Posts: 5
Likes: 0
From: North Carolina
I agree 26 does seem high, but I ran the test twice over 60 miles and it read 25% both times. After i adjusted it I ran it again and it stays around -1/+1. If it is the trans, it only slips during a rolling WOT.
Thread Starter
Registered User
Joined: Apr 2009
Posts: 5
Likes: 0
From: North Carolina
I cleaned my MAF sensor and took a quick read out.
At Idle: -10.56% LTFT and 6-7q/s MAF
At 55 mph: -9.00% LTFT and 12-13q/s MAF
WOT from 55 mph(where I experience the high rpms): O% LTFT and 100q/s!!
Does this help any?
At Idle: -10.56% LTFT and 6-7q/s MAF
At 55 mph: -9.00% LTFT and 12-13q/s MAF
WOT from 55 mph(where I experience the high rpms): O% LTFT and 100q/s!!
Does this help any?
LS1Tech Sponsor
Joined: Dec 2005
Posts: 2,932
Likes: 12
From: CT
he had a hole/leak in his exhaust, which was throwing everything out of whack...
see here:
http://diablosport.com/index.php?nam...wtopic&t=14697
.
see here:
http://diablosport.com/index.php?nam...wtopic&t=14697
.
__________________
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
