Can I run the CA 2.79 pulley on the GM S2 tune and injectors safely? Of course getting it tuned is the best thing to do but if I need some more time for the dough should I just wait to put the pulley on? The website claims that I will be fine with the pulley and the S2 tune. What have you other folks experienced?

 

search button...thank you come again

 

you should wait and get 60's or your injectors will go static it'll be safer and set you up for more modding in the future also i'd get a heat exchanger and or meth before you drop to to small a pulley

 

I think youlll be fine, personally...

 

I did search and it took forever to get some opinions from folks...so I decided to post...I'm not sure what value this post you put up has in here. My suggestion is to add value not be rude.

What is the 'WTF' tune in your siggy? How long have you been running in your set-up? Also I am in Denver at high elevation does that make a big difference?

 

Im doing the same thing! The next mod will be CX H/E. You will be fine

 

There are a ton of threads on this subject. At a 2.9 your injectors run over 100% DC. Some people say yes run it you will be fine I wouldn't if it was my car. In the end it is your call if you want to have your injectors going static put the 2.79 on,.

 

Where can I get the h/e? Is that what you have running? I know a couple of guys running 2.8 with 42lb injectors but they have a custom tune done here in Denver.

Does Intense-racing have the cheapest 60's out there?

 

http://cobalt-addiction.com/performance.htm Stage II

 

Ya CA says this will be fine..I just want to make sure others out there have tried this and agree. I'm on the GM stage 2 tune now with a 2.9 pulley all seems to be fine.

 

I ran a 2.79 ring on a stage II tune for over a year with 0 problems. Diffrent people will say diffrent things.

 

I'm hearing different things for sure. Did you finally get a custom tune? What did you use? I'm just at the 3 year mark and wanting to say **** it and get this bitch tuned up to kick some major ass.

Oh and did you drive it normal...as in redline once in a while or did you play it safe?

 

i had a stage II tune, 2.79 ring, aem intake, one step colder NGK's, pacesetter header, 3 inch cattless dp, 3 inch exaust with an e-cutout, ingalls TD, poly trans mounts. I was not afraid to run the car. I raced weekely, and 140MPH+ pulls were not uncommon(we have a brand new 7 mile stretch of deserted highway)

 

you will be fine. no one has ever blown up from just 2.79 or 2.80 pulley that i know on gm stage tune. however if you add nitrous or other big mod's w/o a wideband or supporting mod's anything can happen

 

I plan on eventually throwing in the AEM CAI, along with vibrant header/downpipe combo. I also just ordered one range colder iridium plugs....I take I'm safe with all of that and a GM stage 2 tune.....I will eventually snag the dual pass intercooler option too from GM. As for the cobra heat exchanger what's the best way to go about getting my hands on that?

Go with 60's then if I do meth from snow performance? That would be way down the road though for the meth injection.

 

They usually run about 100 bucks on ebay

 

Who has gone static on their 42lb injectors? Is there anything documented? Why does ZZP and CA sell 42 lbs with their 2.8 pulley option?

 

I dont have it on me but when we had HPT on my car my injectors were running somethign like 112% with a 2.9 and the 42`s. I am sure someone has a log of it.

 

Why does CA have their claim about how rich the tune is and it is all o.k to run. Shoot I am now worried about running my 2.9 with 42lbs, but I've been running that for a year. Basically I'm killing my injectors and running the risk of killing the engine?

 

you will be fine on gm tune and 2.8

i've ran it for 23k so far and now nitrous ontopof that.

buddy of mine has been going strong for 30k+ now

also another i know has around 40K+ on gm tune and 2.8


no one has blown up from running only 2.8 and gm tune.

 

Thank you for the info. Why is there such a strong discrepancy on this subject. You'd think it would be cut and dry.

 

no one blown there engine running 2.8 and gm stg2 tune.

there has been 2 people on here who ran 2.7 on gm stg2 tune and blew up or had motor problems down the road.

like i said there has been no one on here or anyone off of here that has blown up from just running 2.8 and gm stg2 tune + exhaust mod's and or intake, h/e.

with your mod's you will be fine. think about it. i am running nitrous in my car on top of gm stg2 + 2.8 and car is still running(with compression levels perfect)

 

I am running a 2.8 with 60lbs -
and I will be getting the dual pass - because this summer I ran really hot
and most likely the meth kit and a 2.6 in the future

I had IAT'2 run over 150 - IF I didn't have Hp tuners I would seriously
suggest that -if you don't have any cooling mods and running that set up- get an areoforce to monitor
things like IAT's - KNOCK - etc.. etc.

IF you are going with a non GM product make sure you take your precaution - no warranty folks -
the GM stage 2 runs safe - so you can kick the $hit out of you can and not be concerned
even with a smaller pulley -


Have you had anyone scan your car with HP tuners > ?

 

because on some cars it does make the injectors maxed out. on some cars the injectors are maxed out with just the stage 2 pulley. that is what people claim or prove. personally when i went 2.8 a week after i got gm stg2 put on my car i already knew a bunch of people personally who were running 2.8 and were fine and put a lot of miles on there car so i knew i would be okay.

like i said maybe it is bad or can hurt your engine in the long run but that would take like 80-90k miles. maybe even more. maybe a little less. not really sure. EVERY CAR IS DIFFERENT!!!!!!

ssdan has the same mod's as me except the stock dp gutted and an exhaust. he messed up his 4th piston and ring i believe because he was running nitrous fuel jet 18 or 19. i run a 22 which makes it run more rich. so i am still running fine and used 5bottles. he only got to use 1 and already had problems cause he was running too lean.

EACH CAR IS DIFFERENT.

however to my knowledge no one has blown up from just running gm stg2 + 2.8

nicely said. personally your not going to have a problem with just 2.8 and your mod's. lets just say you did you take it back to the dealership and put back on gm stage 2 pulley. i don't even know why i am saying that because i am more than sure you will be fine.

 

No I haven't been scanned with an HP tune, it is something I want done for sure.

So basically just keep up with the cooling mods, add CAI, header and downpipe and I should be fine.