where do i start?
where do i start? heres the problem- to many mods stacked up and i don't know where to start! can barely even 2 foot the thing to make a log!
trex cam on a 111 lsa
28 lb/hr injectors instead of 26's
home ported/milled stock heads
flycut pistons
headers, ORYP, cutout
LS6 intake
150 DP nitrous kit (not gonna be installed untill tune is perfect for N/A
BONE STOCK TUNE! everything is stock except emmisions stuff has been deleted. i've read most of the stickies and still don't really know where to start. any insight?
trex cam on a 111 lsa
28 lb/hr injectors instead of 26's
home ported/milled stock heads
flycut pistons
headers, ORYP, cutout
LS6 intake
150 DP nitrous kit (not gonna be installed untill tune is perfect for N/A
BONE STOCK TUNE! everything is stock except emmisions stuff has been deleted. i've read most of the stickies and still don't really know where to start. any insight?
To start scale your ifr tables to match your new injectors. Open your tb blade via the set screw to bring the iac counts down. Raise idle to 950 or so. Reduce the first three columns of the ve table by something like 70, 80, and 90% in that order. This should get it drivable enough to do the fine tuning.
went out to drive for a about 3 minutes. the LT's are at zero for the first minute then climb to over -16 in some areas. the ST's are pegging at -43 in bank 1 and 39.5 in bank 2. my O2's are also at there max at 1107 in B1 and is not moving (bad sensor?) and bouncing between 650 and 1000 on B2. timing is around 30 degrees the entire time
TECH Senior Member
Joined: Apr 2004
Posts: 6,157
Likes: 1
From: Texas
Here is where I started
originally posted by NoGo
Here are some things you can try.
Idle Limiters --> Idle Speed: 950
Idle Limiters --> IAC Park Position: Raise all points from 40C and up to 21
Idle Limiters --> Idle Air In Gear: All points 60C and up to 8.6
Fuel --> Main VE Table: Multiply column 400 rpm by 60. Multiply column 800 by 80. Multiply column 1200 by 90.
Ignition --> High Octane Table: Add 2 deg to all points 400 to 1000 RPM, .08 to .32 g/sec
Once done with this program, start the car and check for surging. If the car surges, unplug the IAC and see if the surging stops. If the surging stops follow below.
Idle Limiters --> Idle Air in Gear --> All points above 60C to 9.2
Take the car for a drive and check your idle. If the car goes on cruise control reduce the Idle Air in Gear Table .2 (further if necessary). If the idle holds at 2000 RPM for extended periods of time reduce the P/N Airflow Decay table for all points above 10 MPH by 5% (multiply by 95) until this stops. Be vary careful on this table.
If car keeps surging with the IAC unplugged two more things to try.
Multiply Main VE table by another 95% (total reduction of 85%). Repeat until the surging goes away, or until the car begins to hesitate when you take off.
High Octane Ignition Table. Reduce timing for all points 400 to 1000 RPM, .08 to .32 g/sec by 2. Repeat, but don't reduce it any more than 6 degrees.
If your car still doesn't idle after this, then you have other problems, and should start looking elsewhere.
originally posted by NoGo
Here are some things you can try.
Idle Limiters --> Idle Speed: 950
Idle Limiters --> IAC Park Position: Raise all points from 40C and up to 21
Idle Limiters --> Idle Air In Gear: All points 60C and up to 8.6
Fuel --> Main VE Table: Multiply column 400 rpm by 60. Multiply column 800 by 80. Multiply column 1200 by 90.
Ignition --> High Octane Table: Add 2 deg to all points 400 to 1000 RPM, .08 to .32 g/sec
Once done with this program, start the car and check for surging. If the car surges, unplug the IAC and see if the surging stops. If the surging stops follow below.
Idle Limiters --> Idle Air in Gear --> All points above 60C to 9.2
Take the car for a drive and check your idle. If the car goes on cruise control reduce the Idle Air in Gear Table .2 (further if necessary). If the idle holds at 2000 RPM for extended periods of time reduce the P/N Airflow Decay table for all points above 10 MPH by 5% (multiply by 95) until this stops. Be vary careful on this table.
If car keeps surging with the IAC unplugged two more things to try.
Multiply Main VE table by another 95% (total reduction of 85%). Repeat until the surging goes away, or until the car begins to hesitate when you take off.
High Octane Ignition Table. Reduce timing for all points 400 to 1000 RPM, .08 to .32 g/sec by 2. Repeat, but don't reduce it any more than 6 degrees.
If your car still doesn't idle after this, then you have other problems, and should start looking elsewhere.
