Overkill Tune - Potential Issue? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

sspade · 05-06-2017, 08:33 PM

Hello.

Just wondering if anyone has experienced this issue with their Overkill tune and thoughts about what to do about it...

Recently, I have noticed that under certain load situations (particularly when going up a hill), that my throttle will stutter/stumble/reduce power for a few seconds. Its not every time and I chose to ignore it the first few times but it has definitely happened a bunch of times since Ive been tuned.

No new mods and only running 93 from Top Tier manufacturers.

Not sure what to make of it. I'm going to find it extremely challenging to capture this on my tuner and send the data to Will...

I have sent him an email describing the issue. Waiting for a response...

Jazzzed · 05-06-2017, 10:21 PM

I have not experienced this, and my engine mods are similar to yours. Is your air filter clean?

sspade · 05-06-2017, 10:42 PM

Probably about 17k on my CAI and I haven't touched it yet...

Any recommendations?

Jazzzed · 05-07-2017, 12:21 AM

Quote:

Originally Posted by sspade

Probably about 17k on my CAI and I haven't touched it yet...

Any recommendations?

No, not really. There are too many possibilities. I do think you will need to log it in order for Will to see what the issue is. I would just run scans everytime you drive those areas until you capture it with the AutoCal. Just keep the unit close by and note the time elapsed on the scan when the issue occurs. That will tell Will the exact moment to look at, so even if the file is big, at least he can find that precise moment. You can play back your scans in EFI Live as well by the way.

sspade · 05-07-2017, 10:17 AM

I guess that's what Ill have to do... wont be easy. Don't drive the car everyday and it happens intermittently...

sspade · 05-07-2017, 04:15 PM

Side note. Kinda related. Just got back from a little Sunday afternoon road trip. Drove 270 miles total from downtown Lynchburg to downtown Greensboro for lunch and back to Blacksburg. All highway most part with many hills, turns any varying speed limits. Used cruise as much as possible.

Averaged 66.7 mph and 25.4 mpg.

Had tuner plugged in the entire time. Nothing.

Wondering. For those with similar mods... is this about what you would expect mpg wise?

Jazzzed · 05-07-2017, 05:02 PM

Yes. I'm around 22mpg with suburban driving that has alot of 45-50mph stretches.

derek1387 · 05-07-2017, 09:35 PM

Check your plugs....not sure how many miles you have. Might be worth at least looking at them.

sspade · 05-08-2017, 06:10 AM

Just under 22k

Is it possible that a plug went bad this soon?

ChibiBlackSheep · 05-08-2017, 08:34 AM

Quote:

Originally Posted by sspade

Wondering. For those with similar mods... is this about what you would expect mpg wise?

Yes that's about right. From the factory GM overtimed and underfueled these LFX engines. Will has to give the car more fuel because they were knock crazy from the factory.

I think they tried too hard to hit HP and MPG numbers.

sspade · 05-08-2017, 10:23 AM

Good to know. Thanks.

Will responded. Wants me to send him some data for review and revision.

derek1387 · 05-08-2017, 11:26 AM

Yup. Any time you have issues take reads and send them over. That's the nice thing about his setup.

Always good to be doing reads from time to time anyway as it's never a once and done process. We have been working on my tune for just over a year tweaking things here and there.

Sent from my iPhone using Tapatalk

DokWatson · 05-08-2017, 10:52 PM

My car does this when giving it throttle going uphill at too low of an RPM. Its not tuned.

I average 27mpg. 65mph, two hours a day.

sspade · 05-09-2017, 06:51 AM

Interesting...

Appreciate the response.

05-06-2017, 08:33 PM	#1
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	Overkill Tune - Potential Issue? Hello. Just wondering if anyone has experienced this issue with their Overkill tune and thoughts about what to do about it... Recently, I have noticed that under certain load situations (particularly when going up a hill), that my throttle will stutter/stumble/reduce power for a few seconds. Its not every time and I chose to ignore it the first few times but it has definitely happened a bunch of times since Ive been tuned. No new mods and only running 93 from Top Tier manufacturers. Not sure what to make of it. I'm going to find it extremely challenging to capture this on my tuner and send the data to Will... I have sent him an email describing the issue. Waiting for a response... __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler

05-06-2017, 10:42 PM	#3
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	Probably about 17k on my CAI and I haven't touched it yet... Any recommendations? __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler

05-07-2017, 10:17 AM	#5
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	I guess that's what Ill have to do... wont be easy. Don't drive the car everyday and it happens intermittently... __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler

05-07-2017, 04:15 PM	#6
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	Side note. Kinda related. Just got back from a little Sunday afternoon road trip. Drove 270 miles total from downtown Lynchburg to downtown Greensboro for lunch and back to Blacksburg. All highway most part with many hills, turns any varying speed limits. Used cruise as much as possible. Averaged 66.7 mph and 25.4 mpg. Had tuner plugged in the entire time. Nothing. Wondering. For those with similar mods... is this about what you would expect mpg wise? __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler

05-07-2017, 09:35 PM	#8
derek1387 Drives: 2015 1LS Red V6 Join Date: Aug 2015 Location: St Joseph, MO Posts: 1,849	Check your plugs....not sure how many miles you have. Might be worth at least looking at them. __________________ Sponsors: Overkill Motorsport BCS Auto JacFab Machining APDEG Dream Gear Mobile Audio Thanks to Will @ Overkill Motorsports, Jason @ JacFab, Jim @ Ohio Speed, Brandon at Dream Gear, and the boys at Randy Curnow Chevrolet 5th Gen V6 Performance Facebook Group

05-06-2017, 10:21 PM	#2
Jazzzed Drives: 2015 Camaro LT Join Date: Sep 2016 Location: Fox Lake, IL Posts: 393	I have not experienced this, and my engine mods are similar to yours. Is your air filter clean?

05-07-2017, 05:02 PM	#7
Jazzzed Drives: 2015 Camaro LT Join Date: Sep 2016 Location: Fox Lake, IL Posts: 393	Yes. I'm around 22mpg with suburban driving that has alot of 45-50mph stretches.

05-08-2017, 06:10 AM	#9
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	Just under 22k Is it possible that a plug went bad this soon? __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler

05-08-2017, 10:23 AM	#11
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	Good to know. Thanks. Will responded. Wants me to send him some data for review and revision. __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler

05-08-2017, 11:26 AM	#12
derek1387 Drives: 2015 1LS Red V6 Join Date: Aug 2015 Location: St Joseph, MO Posts: 1,849	Yup. Any time you have issues take reads and send them over. That's the nice thing about his setup. Always good to be doing reads from time to time anyway as it's never a once and done process. We have been working on my tune for just over a year tweaking things here and there. Sent from my iPhone using Tapatalk __________________ Sponsors: Overkill Motorsport BCS Auto JacFab Machining APDEG Dream Gear Mobile Audio Thanks to Will @ Overkill Motorsports, Jason @ JacFab, Jim @ Ohio Speed, Brandon at Dream Gear, and the boys at Randy Curnow Chevrolet 5th Gen V6 Performance Facebook Group

05-08-2017, 10:52 PM	#13
DokWatson Dok Drives: 2015 Camaro 1LS M6 Join Date: Apr 2016 Location: Alaska Posts: 188	My car does this when giving it throttle going uphill at too low of an RPM. Its not tuned. I average 27mpg. 65mph, two hours a day. __________________ Hoonigan/Technician Check out my channel. https://www.youtube.com/user/AK49Watson

05-09-2017, 06:51 AM	#14
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	Interesting... Appreciate the response. __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler