Limp Mode question... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SSmokinSS · 09-17-2016, 05:05 PM

2014 ZL1 6 Speed.
Mods-
Long tubes, Drag radials, SS Throttle body, CAI, 2.50 upper Pulley.

Car ran perfect until I installed the upper pulley...

Ran a best time of 12.7

Installed the pulley, and on the way to the track, when I blip the throttle around a turn, it immediately goes into Reduced power mode, and service stabilitrack..

Unplug the battery, and it resets and runs fine until I blip it around a corner.

At the track last night, I ran a best time of 11.98 @ 118 with no problems. Leaving the track, on the first turn, limped it.

I swapped back in the stock Throttle body with the same results.

Any ideas?

Fishinfirefighter · 09-17-2016, 05:26 PM

Um........might be a stupid question here.....but you DID get a tune for it right?? Reading your post makes it sound lime you just went ahead and threw a upper on there and headed to the track.

SSmokinSS · 09-17-2016, 06:30 PM

Yes. It is tuned. Going to have it looked at tomorrow. Just trying to narrow it down on what to look for. Could be just a tweak in the tune, but hoping someone has seen this before.
The weird part is it ran without any issues at the track. Only limps on the street.

Can'tHave2MuchHP · 09-17-2016, 06:48 PM

Did you upgrade Injectors?

From my limited knowledge I know that 2.5" is way too much over drive to be safe on stock injectors and a tune...Safe mode (Limp Mode) to prevent detonation?

KaBoom1701 · 09-17-2016, 06:48 PM

Data log and share the results with your tuner....

Fishinfirefighter · 09-17-2016, 06:59 PM

Im shocked anyone would run the 2.5 without injectors and a BAP myself but some guys get away with it. Thats cutting it way too close for me.
The only time ive ever seen any limp mode behavior was when id forgotten to plug in my throttle body. Did you try clearing the codes before swapping to the lsa tb?

ZO6 Bryan · 09-17-2016, 08:18 PM

Quote:

Originally Posted by Fishinfirefighter

Im shocked anyone would run the 2.5 without injectors and a BAP myself but some guys get away with it. Thats cutting it way too close for me.
The only time ive ever seen any limp mode behavior was when id forgotten to plug in my throttle body. Did you try clearing the codes before swapping to the lsa tb?

Yes with that much boost he needs injectors and BAP. Nonetheless, that isn't what's causing his problem. Tune is suspect. Who tuned it? Check codes. Probably a P0068 stored. And maybe P0106 and P0101

STUNNAH · 09-18-2016, 01:24 AM

I'm running a 2.5 upper with stock injectors and custom tune with no issues period...I bet it has something to do with the drag radials he's driving around on unless he has overridden the TPMS...I hit mine all the time and have never had any warning light activate, and still on OEM tires...

nighttowl · 09-18-2016, 10:14 AM

If any of the throttle tables were changed in the tune it is most likely the cause.

STUNNAH · 09-18-2016, 10:50 PM

Quote:

Originally Posted by SSmokinSS

Yes. It is tuned. Going to have it looked at tomorrow. Just trying to narrow it down on what to look for. Could be just a tweak in the tune, but hoping someone has seen this before.
The weird part is it ran without any issues at the track. Only limps on the street.

But the question was "Has it been tuned prior to you putting the smaller pulley on and since the pulley install?"...And I bet the answer is "NO"...Tick, tock, tick, boom...

SSmokinSS · 09-19-2016, 12:42 AM

Tune has been massaged. Running 10.8# boost, and pulling 628hp and 568tq. No more limp!

Fishinfirefighter · 09-19-2016, 02:06 AM

Quote:

Originally Posted by SSmokinSS

Tune has been massaged. Running 10.8# boost, and pulling 628hp and 568tq. No more limp!

Huh? With a 2.5 and intake and longtubes? Stock injectors and pump cant support that kind of power. 10.8 boost is not enough for that kind of horsepower either.

STUNNAH · 09-19-2016, 02:47 AM

Quote:

Originally Posted by Fishinfirefighter

Huh? With a 2.5 and intake and longtubes? Stock injectors and pump cant support that kind of power. 10.8 boost is not enough for that kind of horsepower either.

Yes it can...Less exhaust restriction means higher boost per pd, so that equates to lower boost pressure with higher HP, so those numbers look appropriate to the mods...Glad he got it tuned...

Fishinfirefighter · 09-19-2016, 04:18 AM

Quote:

Originally Posted by STUNNAH

Yes it can...Less exhaust restriction means higher boost per pd, so that equates to lower boost pressure with higher HP, so those numbers look appropriate to the mods...Glad he got it tuned...

Im catless with longtubes, injectors, bap, 2.4 showing 13lbs boost and a tony mamo ported ls7 90mm tb on 93oct with s9me other minor mods.....and im not putting that kind of power down...either my tune really is pure SHIT, or that dyno is VERY generous lol. Almost willing to drive out there for some glory numbers if so haha

09-17-2016, 05:05 PM	#1
SSmokinSS Get Some Drives: 2014 ZL1 6Speed Join Date: Mar 2012 Location: The Wood's Edge, NM Posts: 712	Limp Mode question... 2014 ZL1 6 Speed. Mods- Long tubes, Drag radials, SS Throttle body, CAI, 2.50 upper Pulley. Car ran perfect until I installed the upper pulley... Ran a best time of 12.7 Installed the pulley, and on the way to the track, when I blip the throttle around a turn, it immediately goes into Reduced power mode, and service stabilitrack.. Unplug the battery, and it resets and runs fine until I blip it around a corner. At the track last night, I ran a best time of 11.98 @ 118 with no problems. Leaving the track, on the first turn, limped it. I swapped back in the stock Throttle body with the same results. Any ideas? __________________ BUILD THREAD

09-17-2016, 06:30 PM	#3
SSmokinSS Get Some Drives: 2014 ZL1 6Speed Join Date: Mar 2012 Location: The Wood's Edge, NM Posts: 712	Yes. It is tuned. Going to have it looked at tomorrow. Just trying to narrow it down on what to look for. Could be just a tweak in the tune, but hoping someone has seen this before. The weird part is it ran without any issues at the track. Only limps on the street. __________________ BUILD THREAD

09-17-2016, 06:48 PM	#5
KaBoom1701 KaBoom1701 Drives: 13' ZL1 Red M6 Join Date: Dec 2012 Location: I.E. SoCal (Yucaipa) Posts: 8,630	Data log and share the results with your tuner.... __________________ Mods: Roto-Fab Intake, WW Res. kit & Big Gulp Air Scoop, Elite Catch Can, ATI Super Damper & 18% OD Pulley, LF Idler pulley bracket, Metco CC breather, ID850 Injectors, Stainless Power Headers w/ ceramic coating, TR71X Spark Plugs, JMS Fuel Pump Booster, Bo White TB, Tuned by Ted @ Jannetty Racing, Ron Davis HX, D3 Reservoir, Pfadt 1" Springs, Moreno Camber Plates, ZL1 Addons Splitter guard washers, Tow Hook kit & rock guards, Hurst Shifter Billet Plus 6 Speed Short Shifter, ZL1 DRL lighting harness, ZL1 Recaro Seats.

09-18-2016, 10:14 AM	#9
nighttowl Sarcasm loading -------- Drives: 2018 ZL1 1LE Join Date: Dec 2011 Location: TX Posts: 1,808 View My Garage	If any of the throttle tables were changed in the tune it is most likely the cause. __________________ "The salesman actually told me to stop getting it sideways during the test drive" 2018 MBM ZL1 1LE - Stock 2014 CRT ZL1 574 rwhp, 537 rwtq - SOLD 2010 IBM SS Camaro VVT L99 w/ TR6060 swap, 489 rwhp, 444 rwtq - SOLD

09-19-2016, 12:42 AM	#11
SSmokinSS Get Some Drives: 2014 ZL1 6Speed Join Date: Mar 2012 Location: The Wood's Edge, NM Posts: 712	Tune has been massaged. Running 10.8# boost, and pulling 628hp and 568tq. No more limp! __________________ BUILD THREAD

09-17-2016, 05:26 PM	#2
Fishinfirefighter Drives: Zl1 Join Date: May 2016 Location: Ftw Texas Posts: 204	Um........might be a stupid question here.....but you DID get a tune for it right?? Reading your post makes it sound lime you just went ahead and threw a upper on there and headed to the track.

09-17-2016, 06:48 PM	#4
Can'tHave2MuchHP Drives: Fast Join Date: Mar 2015 Location: Michigan Posts: 3,696	Did you upgrade Injectors? From my limited knowledge I know that 2.5" is way too much over drive to be safe on stock injectors and a tune...Safe mode (Limp Mode) to prevent detonation?

09-17-2016, 06:59 PM	#6
Fishinfirefighter Drives: Zl1 Join Date: May 2016 Location: Ftw Texas Posts: 204	Im shocked anyone would run the 2.5 without injectors and a BAP myself but some guys get away with it. Thats cutting it way too close for me. The only time ive ever seen any limp mode behavior was when id forgotten to plug in my throttle body. Did you try clearing the codes before swapping to the lsa tb?

09-18-2016, 01:24 AM	#8
STUNNAH "BEASTM*DE" Drives: 2013 ZL1 Black Join Date: Aug 2016 Location: Tennessee Posts: 1,655 View My Garage	I'm running a 2.5 upper with stock injectors and custom tune with no issues period...I bet it has something to do with the drag radials he's driving around on unless he has overridden the TPMS...I hit mine all the time and have never had any warning light activate, and still on OEM tires...