I have been wondering if something is not quite right with my car making 9-10psi with the 3.1" pulley. Shouldn't it be up around 12-13? I do have a high idle issue that only appeared after the GM reflash. It idled fine before the reflash and the S/C installed.
The only big difference between my car and others running the 3.1" on the M62 is that i still have the stock exhaust. But that doesnt make since to me because the exhaust is restrictive.
Any thoughts?
Tinkles
2003 Cavalier 1SV
Bagged and Blown
check your gauge
i see 10-11 psi on the stock pulley , dc header , stock down pipe , and 2 1/4" catback
i saw 12psi with a 3" with pacesetter header and 2.25" exhaust.. now i see 14psi with a 2.9" so 10 sounds right for a 3.1 to me..
12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]
I see 10-11 with the 3.0. So sounds about right
air temp also makes a difference i get 11 on my Pully and thats normal for my application but if its cold enought i can get 12-13 and if its really hot i'm lucky to get 10
JBO since July 30, 2001
Tinkles wrote:I have been wondering if something is not quite right with my car making 9-10psi with the 3.1" pulley. Shouldn't it be up around 12-13? I do have a high idle issue that only appeared after the GM reflash. It idled fine before the reflash and the S/C installed.
The only big difference between my car and others running the 3.1" on the M62 is that i still have the stock exhaust. But that doesnt make since to me because the exhaust is restrictive.
Any thoughts?
You ported the blower right? That's a 1-1.5 psi drop in pressure.
I say it's a little low, with the stock exhaust I believe it should be around the 12-13 psi.
My 3.0 pulley with the stock header and 2.25 exhaust made 14 psi.
The gauges resets to the 0 "box" when the car is off and i dont have any vacuum leaks.
The only change in psi i noticed with air temp is that i hit 11 psi on the way into work.
As far as i know the blower isnt ported. I could have over looked it during the install though.
Anyway the S/C will temporarily be coming off the car this winter, so i'll have a good chance to check the components out.
What about a latmina core that isnt sealed right?
Tinkles
2003 Cavalier 1SV
Bagged and Blown
If it was leaking from the cores, then it probably would stumble during idle (water being ingested into the engine) and the coolant level would be low along with the system being pressurized when under boost. So most likely not.
i was seeing 10-11psi with the 3.1 pulley
im seeing 10-11 with the stock pulley, 2.25" exhaust and a lsj pacesetter header
M62 KIT for sale PM ME
i'm seeing 10psi on my stock pulley and i still have the factory exhaust system manifold right up to the muffler.
i get 13psi on my 3.0" but it's been 100* everyday since i installed the blower :p
Jn2 wrote:i get 13psi on my 3.0" but it's been 100* everyday since i installed the blower :p
you prob would see more then the rest of everyone you are a smaller displacement engine. think most of everyone else is on a 2.2 and shortly some of us on a 2.4
http://www.cardomain.com/ride/2623318
im a L61...im a 2.2 too :p
2.2 ecotec. gm sc, pacesetter 4-1, 2.25 piping, hi-flo cat, big res, dual tips.
I had a strong 10psi when installed during christmas, this was with stock airbox.
Now I have a strong 9psi during summer, this is with an AEM CAI.
That's just if I get on the gas, usually during spirited dirving i'm only floating around 6-7psi.
i get 10 @WOT, 13when i get to 5k+RPM...
pacesetter header (1.75" primaries)
catless LSJ DP
2.5" catback
KnN intake
3.0" pulley
