just curious as to how much boost. preferably in total kpa reading that your map sensor is reading up to stock redline (6850rpm)

im reading approx 225kpa, which is about 15 psi.. is that right??

 

sounds correct to me. Ultimately it will depend on your setup and how well your motor flows, but the 2.4 will see less boost per pulley size when compared to the 2.0 or 2.2 always. 3.0 pulley saw 9-11psi depending on atm conditions on mine(and many others), so .3" less pulley I would expect 12-14 roughly.

 

stock pulley gave me 7psi, 2,9" pulley gave me 11 psi, so i guess ur right...

anyone else got any inputs?

 

I had the cobalt addiction gm stage 2 upgrade pully 2.79 and was at 17psi...like mtbrent said i guess it's how your setup is and how it flows

 

17 psi?? wowww

u have a stock intake and exhaust system or something?

i mean im fully bolted on everything and am surprised im hitting 15psi

 

at the time I had fujita 3'' intake,header,catless downpipe and full exhaust. I dynoed 258whp and 250fpt...no porting of anything

 

lsj right?

 

19psi

 

assuming stock blower..

 

i hit 16.3psi on my 2.9 i got cai,header/dp , muffler :P

 

im at 12lbs with a 2.8 pulley on my 2.4l

 

Is it cool if I say...... Just because you have high boost does not mean you won't get your ass raped by another guy pushing 12 psi.

 

No one can tell u what a 2.7 pulley should be "boosting" at. There are to many variables that will alter the number (modifications, elevations, location, temperature, etc). You want your boost as low as possible when you pulley down. The lower it is, the more efficient your setup is. Remember boost is a measure of restriction (wow I have to state this a lot), and high boost levels do not mean big power.

 

Agreed

 

I'm getting 14psi with mine

 

Yes LSJ

 

Everyone needs to stop comparing their boost levels. It means absolutely nothing, and is irrelevant.

 

EXACTLY WHAST I SAY, MODES TEMPOS, IATS DRIVER HABITS, TUNE ALL HAVE TO BE CONSIDERED. There is no such thing as a boost level for a pulley. just restrictions.

 

OMG I'M FREAKING OUT!!!! AAAAAAAHHHHHHH THIS BOOST THAT BOOST EVERYONE CALM THE F*CK DOWN

I wonder how pissed staged07 would be if i put 17psi in my sig with 2.79 pulley ~~~~~~>that's how much boost is from a 2.79 bwaahhahahahahahahaha

 

Haha ....

 

I love it

 

Lol!!!

 

It may be irrelevant to you, because you are so smart, but maybe the OP thinks his cat is clogged, and he's seeing too high of readings. Or maybe he just wants to see if his 2.7 on his LE5 is in the correct range, and yes, there is a RANGE for each motor that should be acceptable per pulley. If he came in here stating 22psi on a 2.7/LE5 we would quickly all jump in and say that's too high and there is a restriction somewhere. Would you say his numbers are irrelevant then?! You are correct with all your facts, but maybe some people just want to know what others with an M62 on their LE5 see for boost...

 

There really is no based boost for pulley because i can clogg my cat up on a stock pulley and i bet you ill at least getup to 18 lbs of boost lol, lets do it ricers ha ha ha ha ha lol. j/k. but yeah bro if you want more power go to all mods you can get tune, and a 2.8 pulley or in my case built motor so i went to a 2.6.

if he has a m62, intake and supporting mods i say he will see around 15-18 lbs just saying...

 

i'm spiking around 16 with a 3.1 on a tvs more then i will ever need


269 whp and 218 lbs of torq

13.6 i need some motor mounts and learn how launch and not to peel out in 1st and 2nd