OEM systems/tune compensates for bolt-ons? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

sting808 · 08-10-2009, 07:02 AM

I've heard differing stories on this. Never worked with newer GM motors with computers.

Can these newer GM computer systems adjust A/F for CAI and exhaust bolt-ons so they don't run too lean? Is there a general rule limit to A/F tolerance adjustments? (I understand a tune can address more elaborate mods)

Looking at CAI, Shorty's and CAT-back so I can keep the stock dual CATs and sensor locations, hopefully without throwing a check engine warning or running to lean.

I don't want to void engine/powertrain warranty just just yet. My dealer stopped doing FI installs due to warranty issues with owners. I asked about drop-shipping to tuner(ex. Hennesey), but since Hawaii has geographic limitations, my local dealer warranty coverage is conservative for obvious reasons.

Unlike Ford, a friends Shelby got the full FI, suspension, and tune, with a Ford limited warranty from a local dealer. Too bad the new GM doesn't offer that type of service.

SSOOCH · 08-10-2009, 07:16 AM

If you get the GMPP (GM Performance Parts) CAI, Shorty Headers and CAT Back exhaust and your dealer installs them your warranty stays intact.

sting808 · 08-10-2009, 08:24 AM

The GMPP parts are $$$ and not worth it. I've done Borla cat backs and high-flow CATs(Random Technology) on other non-GM cars and dealer just voids exhaust warranty, not entire powertrain.

Sometimes, they get picky on over-oiled filters and MAF sensors issues, but wash and re-oil new filters that usually come drenched. Hoping CAIs have AEM substitute or some other type of dry filter.

I'm not sure when GM gets involved with dealer warranty work since my last GM car was in the 80s. I'd like to wait a year or so to break-in the car before I say... hell with the warranty and do FI. Figure most QC problems will be addressed by then.

Looking at DT Shorty, MBRP 3" CAT-back, CAI, and shifter.

gpr · 08-10-2009, 12:26 PM

I'm also a newbie at tuning newer GM vehicles. However from my limited time messing with them from what i see the narrow band oxygen sensors will adjust your a/f for mods or whatever while cruising. however the system goes into open lope when you go WOT and thus relies on the maf and map sensors to adjust the stock tune for the added air flow. it will be close but won't be perfect, thus where a tune on your car will help increase power.

*TAG UR IT* · 08-11-2009, 01:38 AM

Yep. But, if you add that tune, your warranty will be null and void in a heartbeat.

Intake and exhaust shouldn't be an issue with running lean...from what I'm told. I plan on doing a tune after the warranty runs out. That's about it.

EAkrish · 08-11-2009, 02:43 AM

tag, you are running the stock tune right? How is it running....

*TAG UR IT* · 08-12-2009, 02:04 AM

PERFECTLY...

...and BOY is it FAST!

LS3SSRS · 08-12-2009, 03:33 AM

Quote:

Originally Posted by TAG UR IT

Yep. But, if you add that tune, your warranty will be null and void in a heartbeat.

Intake and exhaust shouldn't be an issue with running lean...from what I'm told. I plan on doing a tune after the warranty runs out. That's about it.

Tag, I thought you had full headers, catback, and cold air? Didn't you already get a tune to get rid of the check engine light? Or did the computer just recalibrate itself?

LS3SSRS · 08-12-2009, 03:35 AM

Ha I guess I didn't read ahead lol

08-10-2009, 07:02 AM	#1
sting808 Drives: 2010 SS RS Join Date: Apr 2009 Location: Honolulu, Hawaii Posts: 930	OEM systems/tune compensates for bolt-ons? I've heard differing stories on this. Never worked with newer GM motors with computers. Can these newer GM computer systems adjust A/F for CAI and exhaust bolt-ons so they don't run too lean? Is there a general rule limit to A/F tolerance adjustments? (I understand a tune can address more elaborate mods) Looking at CAI, Shorty's and CAT-back so I can keep the stock dual CATs and sensor locations, hopefully without throwing a check engine warning or running to lean. I don't want to void engine/powertrain warranty just just yet. My dealer stopped doing FI installs due to warranty issues with owners. I asked about drop-shipping to tuner(ex. Hennesey), but since Hawaii has geographic limitations, my local dealer warranty coverage is conservative for obvious reasons. Unlike Ford, a friends Shelby got the full FI, suspension, and tune, with a Ford limited warranty from a local dealer. Too bad the new GM doesn't offer that type of service.

08-10-2009, 07:16 AM	#2
SSOOCH Camaro SL,UTs Drives: 2010 Camaro SS/RS #16429 Join Date: Sep 2006 Location: South Jordan, UT Posts: 7,358 View My Garage	If you get the GMPP (GM Performance Parts) CAI, Shorty Headers and CAT Back exhaust and your dealer installs them your warranty stays intact. __________________

08-11-2009, 02:43 AM	#6
EAkrish Scout Sniping Drives: 2010 Ford F150 Lariat SuperCrew Join Date: Mar 2009 Location: Tampa, FL Posts: 762	tag, you are running the stock tune right? How is it running.... __________________ Eric Previous Car:1SS/CGM 6MT w/ Sunroof & FACTORY BLUETOOTH!!!: New Era OTR, Steeda Short Shifter, Ported TB, Stg 2 ported intake manifold, Fasterproms, Poor man down pipes, MBRP 3" Exhaust!!! Now I drive a F150 Supercrew

08-12-2009, 03:35 AM	#9
LS3SSRS Drives: 2010 IBM SS/RS Join Date: Oct 2008 Location: Edmonton, Alberta Posts: 805	Ha I guess I didn't read ahead lol __________________ sold 2010 2SS/RS, 6spd manual, imperial blue metallic w/black leather Blacked out tail/signal lights, 5% rear tint, 20% sides, Dynomax Bullet mufflers, Barton short throw shifter, Clear Image offroad downpipes

08-10-2009, 08:24 AM	#3
sting808 Drives: 2010 SS RS Join Date: Apr 2009 Location: Honolulu, Hawaii Posts: 930	The GMPP parts are $$$ and not worth it. I've done Borla cat backs and high-flow CATs(Random Technology) on other non-GM cars and dealer just voids exhaust warranty, not entire powertrain. Sometimes, they get picky on over-oiled filters and MAF sensors issues, but wash and re-oil new filters that usually come drenched. Hoping CAIs have AEM substitute or some other type of dry filter. I'm not sure when GM gets involved with dealer warranty work since my last GM car was in the 80s. I'd like to wait a year or so to break-in the car before I say... hell with the warranty and do FI. Figure most QC problems will be addressed by then. Looking at DT Shorty, MBRP 3" CAT-back, CAI, and shifter.

08-10-2009, 12:26 PM	#4
gpr Drives: never fast enough Join Date: Apr 2009 Location: CO Posts: 59	I'm also a newbie at tuning newer GM vehicles. However from my limited time messing with them from what i see the narrow band oxygen sensors will adjust your a/f for mods or whatever while cruising. however the system goes into open lope when you go WOT and thus relies on the maf and map sensors to adjust the stock tune for the added air flow. it will be close but won't be perfect, thus where a tune on your car will help increase power.

08-11-2009, 01:38 AM	#5
TAG UR IT www.Camaro5store.com Drives: 2014 ZL1 #705 Join Date: Jul 2006 Location: SA, Texas Posts: 26,558 View My Garage	Yep. But, if you add that tune, your warranty will be null and void in a heartbeat. Intake and exhaust shouldn't be an issue with running lean...from what I'm told. I plan on doing a tune after the warranty runs out. That's about it.

08-12-2009, 02:04 AM	#7
TAG UR IT www.Camaro5store.com Drives: 2014 ZL1 #705 Join Date: Jul 2006 Location: SA, Texas Posts: 26,558 View My Garage	PERFECTLY... ...and BOY is it *FAST*!