Surging Issue with Kenne Bell - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

duffmobile · 12-20-2013, 10:28 AM

Would anyone with HP tuners be willing to look at my tune file? Car is an automatic with the 2.8LC Kenne Bell and Ted's custom 4 " intake pipe.

My shop claims they have done "all they can" but I just don't think they know what they are doing.

RPMs surge up and down at idle, and while cruising will randomly surge / buck the car every minute or so. It's very annoying.

Just looking for some additional opinions please. Car is in storage for the winter and I don't have a handheld tuner to modify so it's not a huge rush. Appreciate any input

east TX Muscle cars · 12-20-2013, 10:34 AM

If you were closer we would get you taken care of, im sure someone up there can help you out

firefighterassassin · 12-20-2013, 11:15 AM

Quote:

Originally Posted by duffmobile

Would anyone with HP tuners be willing to look at my tune file? Car is an automatic with the 2.8LC Kenne Bell and Ted's custom 4 " intake pipe.

My shop claims they have done "all they can" but I just don't think they know what they are doing.

RPMs surge up and down at idle, and while cruising will randomly surge / buck the car every minute or so. It's very annoying.

Just looking for some additional opinions please. Car is in storage for the winter and I don't have a handheld tuner to modify so it's not a huge rush. Appreciate any input

i have the same issue with my car, i got the new style by pass valve from kenne bell made for cammed cars. havent had much of a chance to drive since install thanks to mother nature. may want to try that. if it is a newer blower and bypass valve it will have a red button in the middle of the bypass valve. it is located on the pass side near the back of the small tube that runs along blower housing.

H-E · 12-21-2013, 04:46 PM

Stock TB?

duffmobile · 12-21-2013, 06:47 PM

Quote:

Originally Posted by H-E

Stock TB?

Stock but it's the Vmax one.

duffmobile · 12-30-2013, 08:58 AM

anyone out there able to review my HP tuners file?

Rcfiddy1 · 12-30-2013, 10:29 AM

Did you try your tuner guy?

duffmobile · 12-31-2013, 09:48 AM

tuner guy says he's done all he can. I also asked him how much boost my car makes and he says he thinks 6-7 lbs. I asked if it was in the tune file and here was his answer:

"One bar OS's will only record up to 1bar (zero vacuum). Without converting to a 2+ bar OS, the computer won't record boost. We had the shop's manual boost gage hooked up, but that's not recorded on anything. "

Sound legit or weird?

djw32 · 01-01-2014, 04:01 PM

Speed inc should be able to help you out.

mikepage0007 · 01-07-2014, 07:08 AM

look up mike norris motorsports, he is indy and has tuned my kb a couple times...gret shop..also he is member here

granatl · 01-09-2014, 11:10 AM

I'm only talking about my personal car here...
When I got my car back from the turbo install, it surged like crazy too; almost make a person seasick on the highway. As I learned HP Tuners, I realized they had disabled the Speed Density part of our computers. So, where you're mentioning the 1-bar option in HP Tuners, GM doesn't have a Speed Density map in our cars, but is rather calculated on-the-fly from a series of formulas. HP Tuners can disable the formulas, and put on an OS that uses the old-style SD table; but you've already mentioned the limitation with that.

Once I learned how to use the Bluecat tool to convert from the SD formulas to a table and back again, I noticed my surging disappeared and fixed other driveability quirks. As them if they've updated your MAF^2/etc. formulas, or if they simply switched you to MAF-only mode.

12-20-2013, 10:28 AM	#1
duffmobile Drives: 2010 Camaro 2SS/RS - IOM/IOM Join Date: Mar 2009 Location: Frankfort, IL Posts: 374	Surging Issue with Kenne Bell Would anyone with HP tuners be willing to look at my tune file? Car is an automatic with the 2.8LC Kenne Bell and Ted's custom 4 " intake pipe. My shop claims they have done "all they can" but I just don't think they know what they are doing. RPMs surge up and down at idle, and while cruising will randomly surge / buck the car every minute or so. It's very annoying. Just looking for some additional opinions please. Car is in storage for the winter and I don't have a handheld tuner to modify so it's not a huge rush. Appreciate any input __________________ L99 with 2.8 LC Kenne Bell, Kooks 1 7/8 headers, Corsa Catback, R2C CAI, 491 RWHP / 500 RWTQ ---- 2010 MY #7539

12-30-2013, 10:29 AM	#7
Rcfiddy1 Sold car... Drives: 2010 Rally Yellow 2SS/RS #37115 Join Date: Oct 2009 Location: Manalapan, New Jersey Posts: 2,019 View My Garage	Did you try your tuner guy? __________________ Build Thread ECS Novi 1500 Supercharged, LS3 conversion, Small blower cam, Alky Meth injection, 3:45 rear, BMR Suspension parts, 1LE Sways, Billy Boat ZL1 dual mode exhaust.

01-07-2014, 07:08 AM	#10
mikepage0007 Drives: 2010 camaro Join Date: Aug 2009 Location: port st lucie ,florida Posts: 4,273	look up mike norris motorsports, he is indy and has tuned my kb a couple times...gret shop..also he is member here __________________

01-09-2014, 11:10 AM	#11
granatl Drives: 2SS RS ABM A6 Join Date: Jun 2010 Location: Pahrump, NV Posts: 273	I'm only talking about my personal car here... When I got my car back from the turbo install, it surged like crazy too; almost make a person seasick on the highway. As I learned HP Tuners, I realized they had disabled the Speed Density part of our computers. So, where you're mentioning the 1-bar option in HP Tuners, GM doesn't have a Speed Density map in our cars, but is rather calculated on-the-fly from a series of formulas. HP Tuners can disable the formulas, and put on an OS that uses the old-style SD table; but you've already mentioned the limitation with that. Once I learned how to use the Bluecat tool to convert from the SD formulas to a table and back again, I noticed my surging disappeared and fixed other driveability quirks. As them if they've updated your MAF^2/etc. formulas, or if they simply switched you to MAF-only mode. __________________ Jack Bilger

12-20-2013, 10:34 AM	#2
east TX Muscle cars Drives: 2x 05 Vettes/65'AC cobra/68 camaro Join Date: Apr 2009 Location: LONGVIEW, TEXAS Posts: 845	If you were closer we would get you taken care of, im sure someone up there can help you out

12-21-2013, 04:46 PM	#4
H-E Account Suspended Drives: 2010 zr1 Camaro 2011 vert Join Date: Apr 2013 Location: everywhere Posts: 1,121	Stock TB?

12-30-2013, 08:58 AM	#6
duffmobile Drives: 2010 Camaro 2SS/RS - IOM/IOM Join Date: Mar 2009 Location: Frankfort, IL Posts: 374	anyone out there able to review my HP tuners file?

12-31-2013, 09:48 AM	#8
duffmobile Drives: 2010 Camaro 2SS/RS - IOM/IOM Join Date: Mar 2009 Location: Frankfort, IL Posts: 374	tuner guy says he's done all he can. I also asked him how much boost my car makes and he says he thinks 6-7 lbs. I asked if it was in the tune file and here was his answer: "One bar OS's will only record up to 1bar (zero vacuum). Without converting to a 2+ bar OS, the computer won't record boost. We had the shop's manual boost gage hooked up, but that's not recorded on anything. " Sound legit or weird?

01-01-2014, 04:01 PM	#9
djw32 Drives: on blocks Join Date: Dec 2009 Location: Earth Posts: 34	Speed inc should be able to help you out.