What are you guys seeing for boost PSI?

EnterKO · Jul 12, 2012

Oh yeah my turbo is 03 also, not that it would matter.

Mwilbur516 · Jul 12, 2012

pizza pig said:
lol never had a powermax, i was just kidding bud, running a 66mm.

with 190's/03 turbo and a tsd tune I held 30-31psi on a mechanical gauge, spiking 35 psi

Yeah, thats right. I knew you ran an 03' turbo. See, I can hold 30+psi till' it relearns. Chris just sent me a new SPD to try. Hopefully he'll be able to make this thing hold some more pressure. The 03-04' trucks seem to hold 30+psi better than the 05-07' trucks. I'm really tempted to have Adrian throw a 10 blade wheel in a turbo and run Chris's PMax tune to see what happens. The truck runs extremely strong, I just keep thinking I should see at least 30psi @WOT.

EnterKO · Jul 12, 2012

Mwilbur516 said:
Yeah, thats right. I knew you ran an 03' turbo. See, I can hold 30+psi till' it relearns. Chris just sent me a new SPD to try. Hopefully he'll be able to make this thing hold some more pressure. The 03-04' trucks seem to hold 30+psi better than the 05-07' trucks. I'm really tempted to have Adrian throw a 10 blade wheel in a turbo and run Chris's PMax tune to see what happens. The truck runs extremely strong, I just keep thinking I should see at least 30psi @WOT.

My truck showed the same boost between by factory turbo, and the 03.

Mwilbur516 · Jul 12, 2012

EnterKO said:
My truck showed the same boost between by factory turbo, and the 03.

Yeah, mine too.

yotaneck13 · Jul 12, 2012

My 2000 suberduty dually with a ts 6pos chip and intake. I only have a 20psi guage and it wraps past 20 and settles on the b for boost im gonna say between 25 and 30

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cfdeng7 · Jul 12, 2012

yotaneck13 said:
My 2000 suberduty dually with a ts 6pos chip and intake. I only have a 20psi guage and it wraps past 20 and settles on the b for boost im gonna say between 25 and 30

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This is in the 6.0 aftermarket section...

My 6.0 with erics extreme x will hold about 32 psi at wot and can spike to around 35.

Pizza pig · Jul 12, 2012

btw whats your strategy?

Mwilbur516 · Jul 12, 2012

Strategy is VXCF9H7

Pizza pig · Jul 12, 2012

maybe that is your problem? have bill flash you back and see if anything changes?

Mwilbur516 · Jul 12, 2012

Well I thought that was my stray. I just checked it and it's saying VXCF4H2. WTF?

Pizza pig · Jul 12, 2012

thats probably what your tunes base tune is built on. If you flashed to stock, its probably vxcf9.

Mwilbur516 · Jul 12, 2012

No, I just flashed to stock and that's what it reads. How did it just roll itself back? Again, WTF? I wonder if this has anything to do with it. Chris and Vivian both have my stock strat as Vxcf9. Guess I better give them a call tomorrow. I wonder if Bill rolled mine back and either forgot to tell me or I didn't hear him. I know I've had several FICM tunes of his and he's played with it on the dyno.

Pizza pig · Jul 12, 2012

Bills playing jokes on you lol

little luke · Jul 13, 2012

Mwilbur516 said:
What turbo and mods?

Stock 06 turbo I had just finished cleaning up. 4 inch down pipe 5 inch exhaust, the small fuel mods. Nothing major at that time. Not sure what psi it leveled off at.

Gearhead · Jul 13, 2012

The vxcf4 is a earlier strategy that uses the ebp sensor. the vxcf9h7 is inferred..... I know how to fix the learning on the 4. I would keep using the 4 since Bill has proven that it is more responsive than the 9 flash.

EnterKO · Jul 13, 2012

Gearhead said:
The vxcf4 is a earlier strategy that uses the ebp sensor. the vxcf9h7 is inferred..... I know how to fix the learning on the 4. I would keep using the 4 since Bill has proven that it is more responsive than the 9 flash.

So your saying that you can write a tune that will prevent the boost from slowly lowering after a relearn?

Any truth to benifits of leaving the egr valve plugged in?

hawgdoctor · Jul 13, 2012

Definitely leave the egr valve plugged in. We have had issues with a couple trucks that it had been left out on the egr deletes, and it fixed the issues once we put the valve back in. As far as boost is concerned I'm not sure. Matt would have to answer that one.
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EnterKO · Jul 13, 2012

hawgdoctor said:
Definitely leave the egr valve plugged in. We have had issues with a couple trucks that it had been left out on the egr deletes, and it fixed the issues once we put the valve back in. As far as boost is concerned I'm not sure. Matt would have to answer that one.
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Thanks bud.

Now I need to find a egr valve :doh:

windrunner408 · Jul 13, 2012

hawgdoctor said:
Definitely leave the egr valve plugged in. We have had issues with a couple trucks that it had been left out on the egr deletes, and it fixed the issues once we put the valve back in. As far as boost is concerned I'm not sure. Matt would have to answer that one.
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This is a GREAT point here. Matt do you have your EGR valve still plugged in or is it completely removed from the truck??

I know when I had my EGR valve out (eventhough it was deleted electronically as well as physically) my truck would do some CRAZY things with boost. I never tried to see what a WOT run made for boost though as far as making more or less but it felt like my truck had less power. I put the EGR valve in and all was good.

Just trying to think of weird things is all man. Hope it helps.