iam runnin a 2.7 pulley wit 42lb injectors wit gm tune n h/e , good or bad? cant get 60lb's have no way of tunein car wat should i do?

 

Switch to a 2.9" pully and be happy. Your ruining your car running a 2.7. Its going to blow soon so switch fast!

 

find a place with a dyno and can tune your car... what hp and tq u trying to get?

 

yeah get a 2.9 or 3.0 in there asap. youre prob going static above 5500 rpms.

 

2.7 isnt bad.. i got a 2.6, just get bigger injectors, a tune, and a dual bypass should be fine

 

ive had the same setup for about a year already but iam gonna run more nitrous. why cant u run that pulley wit the injectors?

 

bc it pushes too much boost and your motor wont get enough fuel aka you will damage something soon enough. thats a promis man. you either need
1. 60lb injectors and a tune or
2. 2.9 pulley and leave it alone after that.

 

wat about a 2.8????

becuz iam doin 18psi off bottle n 20psi on bottle

 

let me put it to you this way... on a 2.9 pulley and gm tune, i'm at 122% injector duty cycle. imagine what your at with a 2.7

 

you are welcome to do whatever you want man. we are all suggesting that you dont go any lower than a 2.9. you arent even tuned for it on the small 42lb injectors. you are pushing your luck. you are supposed to pull a degree or 2 of timing as well when you spray

 

how does that injector duty cycle thing workin???? lol iam just askin alot becuz i dont wanna blow my motor.

 

Nobody has flamed yet...? 42's, 2.7, gm tune, and nitrous?

I'm am quite surprised... ss.net, please take your ***** back.

On the other hand, its somewhat nice for a change.

 

i know right no flaming wow. anyways. the injector duty cycle % just means how hard they are working. ideally you want to be around low 70 ish % to be safe aka you need bigger injectors. yo uare well over 140% duty cycle aka pushing your stock injectors and getting incredibly lean up top. if you are going to stay with a 2.7 and not listen then you should get a meth kit and run like a 75/25 meth/water mix if not %100 meth to stop from blowing up. even then you need a tune dude. tunes are a massive part of performance

 

i am dont worry. let me ask u something wats the normal temp that my motor she be at wit a h/e

n iam runnin really lean then?????

 

depends. what temp are you talking about. there are at least 3 places i know of that you take temps from.

 

get that 2.7 out of there.....consider it a grenade.... and the pin gets pulled a little more evrytime you punch it...... rip that thing out fast... and sell it

 

the one it shows on the dash coolant temp

 

2.7, 42lbs, and nitrous. You said you've been running that setup for a year right??? how often do you punch your car???

 

barely ever only when i race, i dont always spray i only drive my car fridays saturday n sunday

 

Ill tune your car for 600 hundred ive been waiting to get a chance to see the faster cobalt in miami.

 

no no 2.7 on 42 and on gm tune yea listen to these guys either switch to a 2.9 or get 60's and have a custom tune or saygoodbye to ur car

 

42's are maxxed out with a 2.8 and meth!

Your motor sir, isn't going to last long!

 

Buy a wideband and you will see for yourself how your safe your motor is. If it's over 12 at wot consider it's days numbered.

 

wats a safe a/r

 

11.3 i would say for nitrous.