http://www.jbodyperformance.com/new/...catName=JP0288

Does anyone know anything about these cams. According to the website the stage three will give 20 hp has no codes and is ecm friendly. Does that mean no tuning required?

Also will this work for an 07

 

Any cams u put in u will have to get a tune.

 

Not true, to get the most out of a cam you need a tune, but you don't HAVE to get a tune...

That wont work on a 07, we have a cam positioning sensor. We have to wait a while for cams that work with that sensor.

 

cams that work with the sensor? You need a way to tune to go around the cam pos sensor.

 

2.2 ecm's not tunable. Check with wopontour he was selling some 2.2l cams cheap.He used a boosta pump and fuel press regulator to get the car dialed in.Worked great.

 

I'm pretty sure that Stage 1 is all you can use without triggering a C.E.L. on 2.2 cobalts

 

yea thats what im confused about how is stage three more ecm friendly than stage two but a more agressive grind

 

a piggyback would be more efficient. pressure regulating is old school tuning.

Unless you can get around the cam sensor, it's going to let the pcm know that there's a difference with the camshaft and the pcm will probably pull timing and throw a code because of it.

Possibly an smt unit or something to dial in the timing to a specific advance, but you're still limited to the stock rev limiter.

 

How, pretell, would you tune "around" a cam position sensor? The 2007 L61's use the sensor for all engine timing variables. It doesn't have the compression sense system like previous L61's.

The exact change is the exhaust cam. The stock cam has a slightly different grind then previous model years, and the shaft extends out of the head to drive the position sensor. Unless you have a cam with that drive on it, it's useless to you.

What I would like to see is if an LSJ cam, which does have the drive on it, would work. But honestly, since the LSJ and L61 cams have identical grinds, but different timing, it would work better just to use the GMPP adjustable timing gears.

 

because you cant adjust the rev limiter, there really is no point to getting a more aggressive grind then what the stage one offers anyways.

 

Cam sensor is only used for initial startup to determine cam phase. Crank sensor (CKP) is used for engine timing variables. All ecotecs will start and run without a cam sensor or in the case of a 2.2, a CMP signal from the ignition module to the PCM. You will probably "enjoy" extended cranking times in most cases though.

 

i have comp cams stage 1 cams in my car. runs great but some times i throw a lean code when i accelerate hard and then take my foot off the accelerator

 

Good to hear that someone has tried them on a 2.2
I wonder if without all your extensive engine mods if it would still throw a Code

 

If it is a P0171 code it can be easily fixed with a maf translator.

 

i got the cams off wop and they are awsome no codes yet from the cams the jbp and the comp stage ones will both work without a tune and they wont throw any codes...if any one is interested i may be selling the cams i got from wopontour pm me if interested

 

on the note of cams, I know this is only a fuel tuner but it says it can increase redline by 500RPM.

would help a little with a more aggressive cam.

http://www.perfectpower.com/products...FuelTuners.asp

 

i cant remember exactly what the code was. ive been gone from my car for so long now (on deployment). ill look up that code and ill tell you if it jogs my memory

 

So....an 07 can or can't run stage one cams?

 

^ wont is the answer.

the current cams dont have the ability to drive the cam sensor. you will have to wait till some spacific app cams come out, or pay bookoo bucks to have a machine shope make you some custom cams that will drive the cam sensor

oh and witt, yeah that is the code. i also some times get the knock sensor code as well but that didnt come along until i put the poly trany mounts in.

 

OK i get why it won't work but why do they claim the stage three will cause no computer problems but stage two will? Are they assumeing we will retune the car?

 

i know this is old but i have stage 2 cams for an 07

 

wow no wonder i was lke how the **** does a cam thread come out of no where...this thing is 10 months old :p

 

I've seen good things with Level Zero motorsports tri-flow cams, no tuning required, nice idle, no codes thrown (unless heavily modified)...BUT tuning is still needed to get the most out of the cams...when I get my tri-flows installed I'll give a review.

 

well just so that the work gets out
07 stage 2 cams w/cam position sensor

just click on the link on my sig