Those who have a 2.8" pulley
Rent me! per hour
Joined: 03-22-07
Posts: 24,161
Likes: 20
From: Still fixing others mistakes.
42.5 injectors
2.8
k&n cai
main issue is the timing. stage 2 runs too much timing to run the 2.8 safely. drop the timing down 10 degrees on advance and you're good. run a bit more fuel as well to se safe.
numbers in sig on 9-12.5 degrees of timing. im now at 17.5 degrees with no knock.
2.8
k&n cai
main issue is the timing. stage 2 runs too much timing to run the 2.8 safely. drop the timing down 10 degrees on advance and you're good. run a bit more fuel as well to se safe.
numbers in sig on 9-12.5 degrees of timing. im now at 17.5 degrees with no knock.
Thread Starter
Member
Joined: 09-27-06
Posts: 338
Likes: 0
From: new jersey
42.5 injectors
2.8
k&n cai
main issue is the timing. stage 2 runs too much timing to run the 2.8 safely. drop the timing down 10 degrees on advance and you're good. run a bit more fuel as well to se safe.
numbers in sig on 9-12.5 degrees of timing. im now at 17.5 degrees with no knock.
2.8
k&n cai
main issue is the timing. stage 2 runs too much timing to run the 2.8 safely. drop the timing down 10 degrees on advance and you're good. run a bit more fuel as well to se safe.
numbers in sig on 9-12.5 degrees of timing. im now at 17.5 degrees with no knock.
Former Cobalt Owner
Joined: 11-28-05
Posts: 4,382
Likes: 1
From: Charles Town, WV
2.8" with 60lbers, front mount HE, XTC Header,2.5" XTC Downpipe w/cat, magnaflow catback, XTC intake w/ air box mod, TAG Tuned
No issues other than a slight idle issue when i come to a stop. Mainly in colder weather.
No issues other than a slight idle issue when i come to a stop. Mainly in colder weather.
Banned
Joined: 10-14-06
Posts: 50
Likes: 0
From: canada
42.5 injectors
2.8
k&n cai
main issue is the timing. stage 2 runs too much timing to run the 2.8 safely. drop the timing down 10 degrees on advance and you're good. run a bit more fuel as well to se safe.
numbers in sig on 9-12.5 degrees of timing. im now at 17.5 degrees with no knock.
2.8
k&n cai
main issue is the timing. stage 2 runs too much timing to run the 2.8 safely. drop the timing down 10 degrees on advance and you're good. run a bit more fuel as well to se safe.
numbers in sig on 9-12.5 degrees of timing. im now at 17.5 degrees with no knock.
gg
stage 2 timing on the 2.8 is fine on 93 octane with 2 step colder plugs. very simple.
Thread Starter
Member
Joined: 09-27-06
Posts: 338
Likes: 0
From: new jersey
Rent me! per hour
Joined: 03-22-07
Posts: 24,161
Likes: 20
From: Still fixing others mistakes.
it's not pretty at all.
please keep in mind, not all of us have access to 93 octane. my car is tuned on 91.
a/f ratio at the tip is 11.0. a/f at the tip without tuning the fuel side was 11.2 on the stage 2 gm map. this is also after the cat. so add roughly .5 to that.
also, running a step colder plugs. and boost limited in first to 10 psi
Thread
Thread Starter
Forum
Replies
Last Post
patooyee
Wanted - What to buy - All categories
0
Oct 1, 2015 01:07 PM