jpmxrider489
10+ Year Contributor
- 2,410
- 146
- Apr 4, 2010
-
pittsburgh,
Pennsylvania
1). No boost, vac, or exhaust leaks.
Boost leak test. leak from 10psi is well over a minute. From 25psi to 10psi took 45 seconds. From 34psi to 25 took 16 seconds. I have the factory pcv with a check valve tested to 30psi and routed like factory. I two catch cans both recirculated back to intake pipe. The PCV and check valve does not go to any catch can.
2). Verify mechanical timing.
I do have aftermarket cam gears. Did not adjust them. They are on the car as they came out of the box.
3). Verify base timing
All good
4). Ignition system
New plugs and wires. Plugs are NGK BR8ES. Coil pack stress tested to 40k.
5). Motor health
Motor has 5k miles on it. Compression was 5 off across the board. Leakdown test was also good, just forget actual result numbers.
6). Basic throttle body adjustments.
Simultating Idle switch from TPS. 1g s90 tb with fiav delete. Keeping ISC
7). Compression ratio
8:3:1
8). Wiring and sensors
Everything is installed right and to my understanding setup correctly.
9). No DTC/CEL codes
None.
10). Electrical system
All good.
11). Base fuel pressure and injector values
42.6 and FIC 1650 HI-Z
12). Properly calibrated and configured wideband sensor
AEM wideband in front location. Simulating narrowband simulation.
13). Type of fuel
E85
Let me start off by saying most of the tuning here was done by someone that has a very well known appearance in the dsm community. The turbo is a 7 blade hx35 with a divided 12cm housing. Straight vband exhayst. Wastegate springs are 17psi. Boost is set with the aem tru boost. I believe it is set to 36psi but it is duty cycle and is set to 60. I know my global is set differently than what the calculator says. That setting is what my tuner said is needed.
My problem is the way airflow reads. Horsepower seems to be all over the place. Boost falls off hard.
Prior to this log, I was still getting 43lb airflow with 2 large boost leaks. Now they are fixed with no change in how the car felt or drove. Airflow is still 43. I know airflow reading is directly related to ve but it just seems off. All the other stuff under wot is good. WBfactor is low and boostest and actual is close.
Could this be maybe my EBC is actually set to 28psi but spikes up to 38 and gets control of it later in the rpm range to bring boost back down? I posted my blt test results above.
If the boost is falling off because of a leak. I would assume it has to be a large leak. I have no idea what it could be then.
Boost leak test. leak from 10psi is well over a minute. From 25psi to 10psi took 45 seconds. From 34psi to 25 took 16 seconds. I have the factory pcv with a check valve tested to 30psi and routed like factory. I two catch cans both recirculated back to intake pipe. The PCV and check valve does not go to any catch can.
2). Verify mechanical timing.
I do have aftermarket cam gears. Did not adjust them. They are on the car as they came out of the box.
3). Verify base timing
All good
4). Ignition system
New plugs and wires. Plugs are NGK BR8ES. Coil pack stress tested to 40k.
5). Motor health
Motor has 5k miles on it. Compression was 5 off across the board. Leakdown test was also good, just forget actual result numbers.
6). Basic throttle body adjustments.
Simultating Idle switch from TPS. 1g s90 tb with fiav delete. Keeping ISC
7). Compression ratio
8:3:1
8). Wiring and sensors
Everything is installed right and to my understanding setup correctly.
9). No DTC/CEL codes
None.
10). Electrical system
All good.
11). Base fuel pressure and injector values
42.6 and FIC 1650 HI-Z
12). Properly calibrated and configured wideband sensor
AEM wideband in front location. Simulating narrowband simulation.
13). Type of fuel
E85
Let me start off by saying most of the tuning here was done by someone that has a very well known appearance in the dsm community. The turbo is a 7 blade hx35 with a divided 12cm housing. Straight vband exhayst. Wastegate springs are 17psi. Boost is set with the aem tru boost. I believe it is set to 36psi but it is duty cycle and is set to 60. I know my global is set differently than what the calculator says. That setting is what my tuner said is needed.
My problem is the way airflow reads. Horsepower seems to be all over the place. Boost falls off hard.
Prior to this log, I was still getting 43lb airflow with 2 large boost leaks. Now they are fixed with no change in how the car felt or drove. Airflow is still 43. I know airflow reading is directly related to ve but it just seems off. All the other stuff under wot is good. WBfactor is low and boostest and actual is close.
Could this be maybe my EBC is actually set to 28psi but spikes up to 38 and gets control of it later in the rpm range to bring boost back down? I posted my blt test results above.
If the boost is falling off because of a leak. I would assume it has to be a large leak. I have no idea what it could be then.