Injen CAI RPMS? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

theBidness · 08-27-2010, 03:30 PM

alright my cai came in yesterday and i just got it installed today and it sounds awesome. I couldnt really tell if it gave any performance gain on the first ride out of my house but then again i know it takes time for the computer to read the new intake and adjust accordingly....but...

after about 10 or so min of leaving it on, I started revving it up and saw that it wont rev past 4500 RPMS. is this normal? like it held at 4600 RPMS~ and didnt go past that. Im assuming that this is just because the computer hasnt adjusted yet...right?

gahammerle · 08-27-2010, 03:33 PM

While you were sitting still? I believe that's the computer protecting the engine. You should be able to go to redline while driving.

Amenti · 08-27-2010, 03:40 PM

The car won't rev much past 4000 while parked; that's a function of the ECU.

theBidness · 08-27-2010, 03:44 PM

Quote:

Originally Posted by Amenti

The car won't rev much past 4000 while parked; that's a function of the ECU.

o good, i was a bit worried about that. but other than that I have no complaints. the fitment was pretty good, and it was a bit harder to isntall it with the tire still on but other than that everytthing look and sounds good.

somebody know how long till the computer full adapts to the new intake? couple days, 100 miles???

KFH · 08-27-2010, 03:50 PM

Did you disconect the battery as instructed, if so, not long.

theBidness · 08-27-2010, 03:53 PM

yep, have a new time of 12:15 on my clock so it did.

alright thanks for the prompt replies; nice to have a peace of mind before I go to work and I will prob post some more stuff tommorow becuase my flowmasters will be installed...

formare · 08-27-2010, 03:59 PM

I dont think disconnecting the battery does much other than ensure you dont short out the power system by doing some strange thing by accident. You can clear the ECM short term memory - I dont think it helped at all but here ya go:

Under the hood is a fuse box. In that fuse box all the fuses are labled - there are two fuses that include "ECM" in the label. Remove both of those fuses. Doesn't take very long maybe 5 minutes or so then re-insert the fuses.

Start the car and you WILL get a CEL. This is the ECM telling you it has no short term memory and it thinks that might be a problem. The short term memory is what it uses to "fine tune" the parameters of engine operations.

Take the car out and vary your driving style for about an hour or so. The NEXT time you start your car the CEL will be off.

formare · 08-27-2010, 04:04 PM

PS - my car also does the rev limited thing from idle. I like considering it launch control like or V8 friends have :-)

wangtangjf7 · 08-28-2010, 04:19 PM

yeah, like people have said, if you have an automatic, it has a rev limiter to protect the engine.

as for me, i felt and heard the difference right away. but then again, a trifecta tune is needed for your computer to fully adjust to the HP gain, but not needed for just a CAI. Once you add that exhaust, and decide in the future to get LT headers, you would need that tune to get the max HP out of those mods.

I may be wrong. Please correct me if i am.

08-27-2010, 03:30 PM	#1
theBidness Drives: 2010 2LT Camaro Join Date: Aug 2010 Location: Tampa, FL Posts: 25 View My Garage	Injen CAI RPMS? alright my cai came in yesterday and i just got it installed today and it sounds awesome. I couldnt really tell if it gave any performance gain on the first ride out of my house but then again i know it takes time for the computer to read the new intake and adjust accordingly....but... after about 10 or so min of leaving it on, I started revving it up and saw that it wont rev past 4500 RPMS. is this normal? like it held at 4600 RPMS~ and didnt go past that. Im assuming that this is just because the computer hasnt adjusted yet...right? __________________ 2010 Chevy Camaro 2LT

08-27-2010, 03:33 PM	#2
gahammerle Drives: 2010 Camaro LS M6 Inferno Orange Join Date: May 2010 Location: Lebanon, OH Posts: 1,673	While you were sitting still? I believe that's the computer protecting the engine. You should be able to go to redline while driving. __________________ Gordy Injen CAI / Solo Mach-X LLT / Solo High-flow res-cats / Barton short shifter / RX Catch Can / RPI Gills / 35% tint / LED Footwell Lighting Front & Rear / Pedders Street 1 / Pedders steering rack bushing / SS struts / Pfadt drop springs / VMax Ported Throttle Body / Spohn Toe Rods / Spohn Trailing Arms / Trifecta Tune / MACE 25mm Intake Spacers Find me on Facebook: http://www.facebook.com/gahammerle

08-27-2010, 03:40 PM	#3
Amenti Drives: 2017 1SS Convertible Join Date: Feb 2010 Location: San Antonio, TX Posts: 583	The car won't rev much past 4000 while parked; that's a function of the ECU. __________________ Performance Mods: Injen Powerflow CAI, Doug Thorley Cat-Back Exhaust, Doug Thorley Shorty Headers, Trifecta Tune, TSW Nurburgring Wheels 20x9, 3.45 Ratio LSD Swap, VMax Black Ice-Olator Appearance Mods: RiderGraphix LS7 Front Fascia Blackout Vinyl, Gill Insert Vinyl, Rear Deck Lid Vinyl (Gloss Black), Gary's Customs Painted Bowties Coming Soon: BMR Trailing Arms

08-27-2010, 03:50 PM	#5
KFH 1SS Victory Red Manual Drives: 2010 1SS 6 Speed Manual Join Date: Apr 2009 Location: Oakville, ON, Canada Posts: 215	Did you disconect the battery as instructed, if so, not long. __________________ 1st Camaro - 77 Type LT Rally Sport, 3 Speed Manual, Inline 6 2nd - 94 Z28, 6 Speed Manual LT1 V8 3rd - 2010 1LT, 6 Speed Manual LLT V6 4th - 2010 1SS, 6 Speed Manual LS3 V8, RX Catch Can, Holley iNTECH CAI, Flowmaster Force II Exhaust

08-27-2010, 03:53 PM	#6
theBidness Drives: 2010 2LT Camaro Join Date: Aug 2010 Location: Tampa, FL Posts: 25 View My Garage	yep, have a new time of 12:15 on my clock so it did. alright thanks for the prompt replies; nice to have a peace of mind before I go to work and I will prob post some more stuff tommorow becuase my flowmasters will be installed... __________________ 2010 Chevy Camaro 2LT

08-27-2010, 03:59 PM	#7
formare The Milano Drives: 2017 Firefly ShipWorks Join Date: Jun 2010 Location: Chicagoland (Crown Point, IN) Posts: 1,877 View My Garage	I dont think disconnecting the battery does much other than ensure you dont short out the power system by doing some strange thing by accident. You can clear the ECM short term memory - I dont think it helped at all but here ya go: Under the hood is a fuse box. In that fuse box all the fuses are labled - there are two fuses that include "ECM" in the label. Remove both of those fuses. Doesn't take very long maybe 5 minutes or so then re-insert the fuses. Start the car and you WILL get a CEL. This is the ECM telling you it has no short term memory and it thinks that might be a problem. The short term memory is what it uses to "fine tune" the parameters of engine operations. Take the car out and vary your driving style for about an hour or so. The NEXT time you start your car the CEL will be off. __________________ My first Love. She was called "Miss Carriage" (still cry when I think about her) 383, Muncie 4 speed, custom linkage mated to hurst short throw shifter.

08-27-2010, 04:04 PM	#8
formare The Milano Drives: 2017 Firefly ShipWorks Join Date: Jun 2010 Location: Chicagoland (Crown Point, IN) Posts: 1,877 View My Garage	PS - my car also does the rev limited thing from idle. I like considering it launch control like or V8 friends have :-) __________________ My first Love. She was called "Miss Carriage" (still cry when I think about her) 383, Muncie 4 speed, custom linkage mated to hurst short throw shifter.

08-28-2010, 04:19 PM	#9
wangtangjf7 Drives: CGM LT/RS Join Date: Jun 2010 Location: Groton, CT Posts: 307	yeah, like people have said, if you have an automatic, it has a rev limiter to protect the engine. as for me, i felt and heard the difference right away. but then again, a trifecta tune is needed for your computer to fully adjust to the HP gain, but not needed for just a CAI. Once you add that exhaust, and decide in the future to get LT headers, you would need that tune to get the max HP out of those mods. I may be wrong. Please correct me if i am. __________________ CGM LT/RS Trifecta Tune "Ghost Cam"-ARH LT Headers w/ Straight Pipe-Bullet Mufflers- Magnaflow Resonated X Pipe-Injen CAI-RX Catch Can-Pistol Grip Shifter w/ Tap shift-Xenon Dome Lights

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