09-17-2016, 05:05 PM | #1 |
Get Some
Drives: 2014 ZL1 6Speed Join Date: Mar 2012
Location: The Wood's Edge, NM
Posts: 712
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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?
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09-17-2016, 05:26 PM | #2 |
Drives: Zl1 Join Date: May 2016
Location: Ftw Texas
Posts: 204
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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.
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09-17-2016, 06:30 PM | #3 |
Get Some
Drives: 2014 ZL1 6Speed Join Date: Mar 2012
Location: The Wood's Edge, NM
Posts: 712
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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.
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09-17-2016, 06:48 PM | #4 |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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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, 06:48 PM | #5 |
KaBoom1701
Drives: 13' ZL1 Red M6 Join Date: Dec 2012
Location: I.E. SoCal (Yucaipa)
Posts: 8,631
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Data log and share the results with your tuner....
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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. |
09-17-2016, 06:59 PM | #6 |
Drives: Zl1 Join Date: May 2016
Location: Ftw Texas
Posts: 204
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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? |
09-17-2016, 08:18 PM | #7 | |
Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012
Location: Southeast
Posts: 1,838
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Quote:
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Bryan 2018 ZL1 M6
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09-18-2016, 01:24 AM | #8 |
"BEASTM*DE"
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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...
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09-18-2016, 10:14 AM | #9 |
Sarcasm loading --------
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If any of the throttle tables were changed in the tune it is most likely the cause.
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"The salesman actually told me to stop getting it sideways during the test drive"
2018 MBM ZL1 1LE - 652 rwhp, 588 rwtq SAE 2014 CRT ZL1 574 rwhp, 537 rwtq - SOLD 2010 IBM SS Camaro VVT L99 w/ TR6060 swap, 489 rwhp, 444 rwtq - SOLD |
09-18-2016, 10:50 PM | #10 | |
"BEASTM*DE"
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Quote:
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09-19-2016, 12:42 AM | #11 |
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Drives: 2014 ZL1 6Speed Join Date: Mar 2012
Location: The Wood's Edge, NM
Posts: 712
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Tune has been massaged. Running 10.8# boost, and pulling 628hp and 568tq. No more limp!
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09-19-2016, 02:06 AM | #12 |
Drives: Zl1 Join Date: May 2016
Location: Ftw Texas
Posts: 204
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09-19-2016, 02:47 AM | #13 |
"BEASTM*DE"
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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...
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09-19-2016, 04:18 AM | #14 |
Drives: Zl1 Join Date: May 2016
Location: Ftw Texas
Posts: 204
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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
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