2.8 only pushing 14-15 psi
2.8 only pushing 14-15 psi
so i have a stage 3. 2.8 pulley, 42 injectors, duall pass endplate, S3 HE. when i first got my stage 2 on i was hitting 16psi. now latley im hitting 14-15. anyone now y? also for all the 42lb 2.8 haters, the injectors are at 88% IDC. so i now its not them. vac leak?
i only hit 15 with mine but it is because i have exhaust so there is less resistance.
do u feel a loss of power? boost is a measurment of restriction. so higher boost dosnt always mean more power.
do u feel a loss of power? boost is a measurment of restriction. so higher boost dosnt always mean more power.
it feels the same i guess.....idk i just like seeing that little needle shoot up lol
Senior Member
Joined: 06-10-10
Posts: 1,660
Likes: 2
From: Upstate, SC
sounds like youre blower is starting to wear and clearances are starting to get a bit loose and since it doesnt seal as well its not able to hold as much boost.
pretty sure he could have the fuel pressure turned up which effectively lowers duty cycle and generally makes the pattern better.
pretty sure he could have the fuel pressure turned up which effectively lowers duty cycle and generally makes the pattern better.
Senior Member
Joined: 06-06-06
Posts: 2,729
Likes: 9
From: O Fallon, MO
1. Wyoming is 4000ft+ above sea level. A 2.8" pulley would very likely be at lower IDC at those altitudes, especially if running a leaner tune than GM stage 2.
2. How long have you had stage 2? Have you had it during hot weather yet? The hot air is much less dense and you can see much lower boost levels.
2. How long have you had stage 2? Have you had it during hot weather yet? The hot air is much less dense and you can see much lower boost levels.
1. Wyoming is 4000ft+ above sea level. A 2.8" pulley would very likely be at lower IDC at those altitudes, especially if running a leaner tune than GM stage 2.
2. How long have you had stage 2? Have you had it during hot weather yet? The hot air is much less dense and you can see much lower boost levels.
2. How long have you had stage 2? Have you had it during hot weather yet? The hot air is much less dense and you can see much lower boost levels.
2. not yet, its been around 80*F so far, but i just got my new clutch so i cant really see what she will do now.
......200 more miles,actually does anyone now how long it takes to break in the gm staged clutch? when i first started to drive it, it sucked. now it feels freaking awsome, so im wondering if its all ready broken in. i was going to baby it untill i hit about 500
im also 4000 ft above sea level so im pretty sure youre ok.
lol i also have the same clutch and i waited 500 miles to go anywhere above 3.5k rpms.
you should be good after 500 miles
1. ya this is why i always get into an argument over my IDC.
2. not yet, its been around 80*F so far, but i just got my new clutch so i cant really see what she will do now.......200 more miles,actually does anyone now how long it takes to break in the gm staged clutch? when i first started to drive it, it sucked. now it feels freaking awsome, so im wondering if its all ready broken in.
2. not yet, its been around 80*F so far, but i just got my new clutch so i cant really see what she will do now.
......200 more miles,actually does anyone now how long it takes to break in the gm staged clutch? when i first started to drive it, it sucked. now it feels freaking awsome, so im wondering if its all ready broken in.you should be good after 500 miles
Last edited by revolution607@yahoo.; Jul 1, 2010 at 02:34 PM. Reason: Automerged Doublepost
lol i dont have a S3 HE but i do have a second HE.
and i love the clutch holds so much better than stock.
I never noticed this until i drove my friends stock ss/sc but its considerably harder than a stock clutch.
and i love the clutch holds so much better than stock.
I never noticed this until i drove my friends stock ss/sc but its considerably harder than a stock clutch.
sweet, ya i cant wait to see what it really feels like at WOT. i ended up cracking my tranny case, so the dealership ended up putting a new tranny with LSD since i already had that. then GM wheel hop kit, and then my clutch i only had to pay for the clutch and parts and 1 hour of labor. it was like 504.00, i really cant belive they did that for me 
..........dam wheel hop lol
..........dam wheel hop lol
Senior Member
Joined: 06-06-06
Posts: 2,729
Likes: 9
From: O Fallon, MO
1. ya this is why i always get into an argument over my IDC.
2. not yet, its been around 80*F so far, but i just got my new clutch so i cant really see what she will do now.......200 more miles,actually does anyone now how long it takes to break in the gm staged clutch? when i first started to drive it, it sucked. now it feels freaking awsome, so im wondering if its all ready broken in. i was going to baby it untill i hit about 500
2. not yet, its been around 80*F so far, but i just got my new clutch so i cant really see what she will do now.
......200 more miles,actually does anyone now how long it takes to break in the gm staged clutch? when i first started to drive it, it sucked. now it feels freaking awsome, so im wondering if its all ready broken in. i was going to baby it untill i hit about 500
I only hit 15.5 psi on a 2.7 with full exhaust, and my elevation is about 1600ft. Its been 95+ degrees the last week and hasnt gotten under 85 at night so i have been easy on it lately lol
