just curious, did the drop off in your boost numbers happen to accompany a drop in actual outside temperatures as of late?
Colder air can get you to the torque cap with less boost.
No, the opposite actually...but in any event, I don't think AAT's have fluctuated much lately during the times of day that I'm on the road to have had much effect.
For the year that I've had the car (~13k miles), I've never seen higher then 16psi.
Its been around 40 degrees every morning when I drive in to work and I've been seeing about 13-14psi max on average.
When I first performed the WG mod, it was 30 degrees and I pegged 20psi the whole way home. After a few days I was down to about 15-16psi, but given that temps are still in the 30-40s, that is still a 1-2 psi improvement.
Now, about two weeks and 500 miles later, I'm back at 13-14 psi...still 30-40 degrees.
To further test this theory, last night I reset my ECU. Temps again were in the 30s, and I was hitting 19-20 psi again.
Now a flashed ECU doesn't seem to be susceptible from the impressions I've gathered on the board. But I have no boost leaks and upon an ecu reset, I can hit 20psi...that seems pretty definitive to me that my stock ECU is learning the mod.
I may be wrong, but for those that don't think the ECU has torque management, I'd be thrilled it you could then help me figure out what my car is doing. I've ordered Dave's MBC and IAT2 Reg, so we'll see if that manages to "trick" the ecu.
__________________ 2007 'Cool' GXP
Personal Audio Link
Custom/Homemade A-Pillar Pod w/ Boost/Vac Gauge
Dejon IC Pipes & CAI
Wastegate Rod Mod
Solo Street Race
Debaged
I have the IAT2 the unit comes set at 19 lbs, I saw no change at all until I adjusted it to show less to the ECM, turned in counter clockwise. Dave has posted not to do this unless you have a modified tune as it can cause a lean condition. You listed the EDAL mod, do you mean the solenoid bypass? Have you tried undoing that and resetting the ECM?
__________________ Red Bull Drift Team 2008
Solo Mach and High Flow Cat
Dejon Intercooler, Intake Elbow, BOV spring
Wester's Garage RACE tune II
JPM custom shifter.
Barney Juice with Militec-1
GM Auto-dimming mirror with OnStar and maplights
Rhys Millen Racing, RMR Style Bar. Peak RWHP 286.3, Peak Torque 313 ft/lbs.
SSR Type C wheels, Bridgestone Potenza RE-01's
DDM Works PINK Breastplate
I haven't had the EDAL mod in a few months, just haven't updated my sig. It never seemed to do much for me.
I was under the impression (and it appears on daves MBC thread) that as long as you didn't surpass 20psi, you shouldn't have an issue with the motor running lean.
Quote:
Originally Posted by DEJON-Dave
BE CAREFUL when driving to make sure you don't overshoot your desired boost level. You should notice boost increasing much faster than stock. 20psi is a safe limit with little or no mods. Boost will fall off to around 18psi at redline due to the mechanics of the turbo and WG system.
I'm not looking to surpass 20, at this point, if I'm hitting the torque limit with only 13-14 lbs of boost, another 5-7 should hold me over for a bit. I know that when the car hits 20 now (until the ecu relearns), its like a totally different animal. If it does run lean, I'll just have a better excuse to purchase the tune
__________________ 2007 'Cool' GXP
Personal Audio Link
Custom/Homemade A-Pillar Pod w/ Boost/Vac Gauge
Dejon IC Pipes & CAI
Wastegate Rod Mod
Solo Street Race
Debaged
Well with it at 19, I noticed no difference. I didn't have an issue with the wastegate unlearning, I think because of the Dejon intercooler (increased volume of IC = reduced boost) my boost never went over 19. With the IAT2 and the tune I see 17 on the DIC, that equates to about 23 or so really and the car is very fast. I go into limp mode now in 4th and 5th do to the MAP sensor after 3 seconds at full boost. I got the MAP regulator to fix that issue, now if my exhaust gasket gets here I can install the MAP and see what happens.
__________________ Red Bull Drift Team 2008
Solo Mach and High Flow Cat
Dejon Intercooler, Intake Elbow, BOV spring
Wester's Garage RACE tune II
JPM custom shifter.
Barney Juice with Militec-1
GM Auto-dimming mirror with OnStar and maplights
Rhys Millen Racing, RMR Style Bar. Peak RWHP 286.3, Peak Torque 313 ft/lbs.
SSR Type C wheels, Bridgestone Potenza RE-01's
DDM Works PINK Breastplate
Yes I've noticed that either the intercooler, or maybe the tune itself, seems to negate this "relearning" of the WG mod. Or atleast most of the people reporting a similar situation to mine have neither.
I'm running a manual boost gauge and so unfortunately it does not appear to be an issue of the DIC misreading the boost numbers, as both gauges appear to be in almost perfect sync.
I'm sure it's only a matter of time until I spring for the tune, but I'm curious to see how much I can squeeze out before taking it to the next level
__________________ 2007 'Cool' GXP
Personal Audio Link
Custom/Homemade A-Pillar Pod w/ Boost/Vac Gauge
Dejon IC Pipes & CAI
Wastegate Rod Mod
Solo Street Race
Debaged
With the IAT2 and the tune I see 17 on the DIC, that equates to about 23 or so really and the car is very fast.
I like your math, but i dunno about that 23psi unless you have a boost gauge.
How much airflow are you seeing near the redline on your dashhawk? Even i noticed the airflow go back to stock with the wastegate mod, you should be seeing the same unless you have a manual boost controller or lyndon somehow upped the boost.
That is what Lyndon told me, he told me to set it so the DIC showed 17 and that should be 23 24 lbs in reality, from what he is seeing on the dyno. The IAT2 lies to the ECM so it see's a lot less boost than what is actually there, that is the whole point. I see 17 on the DIC and the Dashawk, it is reading the same data as the ECM, a lie, and I hit limp mode in forth or fifth if I stay in boost over 3 seconds. The map reading is causing the limp mode. I am getting the map regulator to lie the the MAP sensor to stay out of limp. I had tp paly with the IAT2 a lot. I was able to set it and see 23 on the DIC easily, but it went into limp mode really easy but it sure was fast. I just don't want to blow stuff up. I will get a boost gauge as soon as someone makes an non CF gauge pod.
__________________ Red Bull Drift Team 2008
Solo Mach and High Flow Cat
Dejon Intercooler, Intake Elbow, BOV spring
Wester's Garage RACE tune II
JPM custom shifter.
Barney Juice with Militec-1
GM Auto-dimming mirror with OnStar and maplights
Rhys Millen Racing, RMR Style Bar. Peak RWHP 286.3, Peak Torque 313 ft/lbs.
SSR Type C wheels, Bridgestone Potenza RE-01's
DDM Works PINK Breastplate
The dashhawk reads the airflow from the maf sensor in grams/sec, you can easily get an idea of how much air the turbo is pushing. Go into the menu and go to Air and select Maf, then log away.
That would involve me actually figuring out how to use the Dashawk, all this science I don't understand. It makes a very nice digital speedo and boost gauge, beyond that I don't really use it much except to read and clear codes. The boost and map are out of sync because I get an underboost code when it goes into limp, that tells me that it is seeing a high MAP reading and a low boost reading because of the IAT2. I was able to to stay with a 6.0 GTO from 60 -110 several times that tells me something is working, last run I hit limp mode. He could not pull away from me and the car did not look or sound stock. As soon as I get the exhaust leak fixed I will get on a dyno and have some real numbers, including actual boost.
__________________ Red Bull Drift Team 2008
Solo Mach and High Flow Cat
Dejon Intercooler, Intake Elbow, BOV spring
Wester's Garage RACE tune II
JPM custom shifter.
Barney Juice with Militec-1
GM Auto-dimming mirror with OnStar and maplights
Rhys Millen Racing, RMR Style Bar. Peak RWHP 286.3, Peak Torque 313 ft/lbs.
SSR Type C wheels, Bridgestone Potenza RE-01's
DDM Works PINK Breastplate
That is what Lyndon told me, he told me to set it so the DIC showed 17 and that should be 23 24 lbs in reality, from what he is seeing on the dyno. The IAT2 lies to the ECM so it see's a lot less boost than what is actually there, that is the whole point. I see 17 on the DIC and the Dashawk, it is reading the same data as the ECM, a lie, and I hit limp mode in forth or fifth if I stay in boost over 3 seconds. The map reading is causing the limp mode. I am getting the map regulator to lie the the MAP sensor to stay out of limp. I had tp paly with the IAT2 a lot. I was able to set it and see 23 on the DIC easily, but it went into limp mode really easy but it sure was fast. I just don't want to blow stuff up. I will get a boost gauge as soon as someone makes an non CF gauge pod.
The guy that manufactures the CF A-pillar pod is in Mexico most of the time and hard to get a hold of. We are working to straighten that out. I pressured him about a lower cost fiberglass drivers pillar pod that is paintable and he's going to check it out and get back to me in a few days. Hopefully we'll have something soon. I want a paintable one myself because I just did my dash and trim in simulated walnut burl
__________________
Dave at www.DEJONPOWERHOUSE.com
Currently running 311 rear wheel hp with 16g kit at 25psi
Stocking Dealer for HP Tuners VCM Suites and Wester's tune ~~~~~~~~~~~~~~~~~~~ NASSOA
Founding Member #6 ~~~~~~~~~~~~~~~~~~~
That is what Lyndon told me, he told me to set it so the DIC showed 17 and that should be 23 24 lbs in reality, from what he is seeing on the dyno. The IAT2 lies to the ECM so it see's a lot less boost than what is actually there, that is the whole point. I see 17 on the DIC and the Dashawk, it is reading the same data as the ECM, a lie, and I hit limp mode in forth or fifth if I stay in boost over 3 seconds. The map reading is causing the limp mode. I am getting the map regulator to lie the the MAP sensor to stay out of limp. I had tp paly with the IAT2 a lot. I was able to set it and see 23 on the DIC easily, but it went into limp mode really easy but it sure was fast. I just don't want to blow stuff up. I will get a boost gauge as soon as someone makes an non CF gauge pod.
Dave can tell us since he has a boost gauge and has made a lot of data.
Dave no longer has the stock turbo. If weather holds I can have some better info soon, working in the driveway during an ice storm tends to slow me down some.
__________________ Red Bull Drift Team 2008
Solo Mach and High Flow Cat
Dejon Intercooler, Intake Elbow, BOV spring
Wester's Garage RACE tune II
JPM custom shifter.
Barney Juice with Militec-1
GM Auto-dimming mirror with OnStar and maplights
Rhys Millen Racing, RMR Style Bar. Peak RWHP 286.3, Peak Torque 313 ft/lbs.
SSR Type C wheels, Bridgestone Potenza RE-01's
DDM Works PINK Breastplate
Dave no longer has the stock turbo. If weather holds I can have some better info soon, working in the driveway during an ice storm tends to slow me down some.
Woosss ....
__________________ #118042 11/18/06 GXP Mean Darkside loaded wo On-Star
MODS: ED IC Pipes, Dejon IC, Magnaflow Catback
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