If I put a 2.8 pulley on a stage 2 will I have any problems? Will it run lean?

 

RESEARCH!!!

yes you will have problems. Your engine will be running so out of wack it won't even be funny.

60# injectors, cooling mods, and a tune if you want a 2.8

 

Oooooooooookkkk....... little harsh, but direct lol. Thanks

 

I run a 2.8 on 42.5# injectors but I am tuned for that... also getting some cooling mods.. but so far no [problems at all.... but I guess it's better to go with the 60s, better safe than sorry... I did it without knowing...lol there a good few people doing it without problems as well!!

 

I ran 2.8" and 42.5# injectors for a while and I was always scared it was going to lean out and blow, even tho I was tuned. My duty cycle was at 105%, my IAT's always were in the 150's-160's after a 1-3rd gear pull. I would recommend all that roadrage says.

 

those are the exact reasons it's recommended to run the 60's and cooling when you go to that level.

I was at 109% IDC on the 42's. I got a OTTP H/E, 60's and a 2.8. My IDC's are 85% at WOT and my IAT's are around 120 after a good run.

P.s.- for those that don't know, starting around 160* (I think it may even be earlier) your car's ECU will start to pull timing = loss of power

 

i been with 42s and 2.8 for about 2 years, custom tune and cooling mods... optb/dualpass/h-e

 

Not 100% true. Cooling mods are not NEEDED. Just recommend. I ran 2.8/60lb with no cooling mods. Car ran amazing. Over the winter i installed my H/E and yesterday installed my meth...doing tune/dyno tonight.

But yes..dropping the pulling size will send the tune abit messed up.

 

Same goes for a 2.9 I assume then. Thanks guys for your input

 

Not really, 2.9 is pretty much 100% safe. If your going to prove me wrong show me someone who has blown due to stage 2 and 2.9 only. No one to my knowledge.

 

Oh god, here they come. The "not entirely true" people.

Look, do you want your **** running right or not. There are people on here that only want to know how far they can push a mod.......and i emphasize "push".

You will be running too hot without cooling mods. Your IDC's will be over if you don't have the right size injectors. Will your engine blow up, no. Will the car drive "fine", yes. But these f*ckin people need to stop commenting based on their visual observations. Just because the car doesn't blow up or make funny noises doesn't mean it's running fine.

The info given about 2.8's, 2.9's, cooling mods, injector size is FACT, not opinion or recommendations. Just because the engine doesn't fail doesn't mean your doing it right. Punch yourself in the head.

 

how do u know what ur idc's and iats are?? when I run my car hard my coolant temp. is around 195.. is that bad? I'v seen it gone to 205 as well..

 

Lmao never knew a question could offend so much.... if someone out there runnin 2.9 on stage 2, can I get hard evidence.... mostly for roadrages sake lol

 

Coolant temperature has nothing to do with it. Your coolant temp could be 200 and so could your IAT2 and that is bad

IAT2 is your intake air temperature after the blower.... you need a scan gauge (aeroforce) to see that

IDC's I got from HPTuners scan.

I got 60's recently and my ducty cycle is 69% and my IAT2 is 130 so that is good.

Be safe and protect your engine get cooling mods and 60# injectors

 

yes sir !!

 

and this is all the evidence you should need.


haha, yeah it just makes me mad when everyone wants to do everything as cheap and half-assed as possible. just because the car isn't gonna blow up doesn't mean the setup is correct. there are people on here that will never blow there engine, but I gaurantee they are running the wrong setup and not getting as much power as they should.

 

I was looking at your IAT temps SCcobaltSS sitting at 130 at WOT.. I was so confused until i seen you were from Phoenix.. My IAT's with no cooling mods on a 2.9 are not even above 100 and with my 2.6 and no cooling mods in this weather never reach 110.. I was like, wtf. :P

Roadrage.. Are your IAT's that high in this weather or.. Summer?

I ran a 2.8 setup on 42's with no exhaust and no cooling for a summer.. I heat soaked miserably, my IDC's were to high and I pulled timing with my iat's being around 165... I dynoed 240whp and 220wtq.. It RAN Good, but it wasn't exactly being peaceful on my engine at all.. My camaro I had ran like a raped ape, but when I sold it it blew up 2 weeks later, Lmao..

 

anyone have a pic of that dead horse getting beaten?

 

It was the fastest thing I could come up with.. Lmao

 

My IAT's were that high in this weather after a lot of driving to get my Fuel trims right and a few highway pulls to check the commanded AFR after the dyno tune. So after about 30 minutes of medium to hard driving.

Also, keep in mind that once summer hits, those IAT2 temps are going to go up, so after a run at the track, and then cool-down time, I should still only be at that winter temp and be good for another run.

I ran 242hp under a 15% load (for tuning) and it was pulling timing because my waterpump wasn't on (no one thought to check it) and I was overheating. So, I'm probably around 245-250hp.


hahaha

 

Fixed... haha yah my IAT's are irrelevant to some of yours but the delta T differnece should be near the same.

 

WHEN is a new member with less than 50 post we can give him a pass on the subject, we ALL where noob once that dint knew any better!

 

I was never a noob.. LMAO :P Were not giving him THAT big of a hard time.. Just informing forcefully? :P No hard feelings.. Him and I are tight even though before this thread I've never even spoken to him, lol

 

lol damn u redlines driver u all a pain in the booty!

 

2.9 acceptable 2.8 your getting risky, get 60lbs injectors