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GIAC X chip Boost levels Question

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Old 09-30-2007, 05:30 PM
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Default GIAC X chip Boost levels Question

Just trying to confirm the possible source of my problem did some searching but didnt find much.

Got the X-chip a couple days ago and the boost levels i have been getting in different gears has me a little confused.

1st Gear 8-11psi (stock which i hear is normal)
2nd Gear hits maybe 15 then drops to 9-11 especially after 4000rpm the car falls flat.
3rd Gear hits 17ish then drops to about 12-15 this gear is very inconsistant sometimes only reachs 13-15psi
4th Gear love it hits 19 settles at 18
5th Gear stronger than 4th hits 20 holds 19

From what i have read i assume wastegate problem?

Any other ideas i find it strange that i can hold 18-20psi in 4th and 5th but cant get anything out of the lower gears.

Will VAG when i get a chance but kind of busy lately.

ALT about 1 mile above sea level and about 10 C or 50F
Old 09-30-2007, 06:54 PM
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Default seems to be what I would expect... follows what my GIAC hammer/FXK04 w/ new turbo makes for boost.

higher gear = higher load on the engine = higher boost. If you said you maxed out at 10 psi in 5th then I'd say you have a wastegate problem. I think you're good.
Old 09-30-2007, 07:39 PM
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Default Seems to be just about what happens with my GIAC X chip...

At first I would only hit 5 psi, limp mode, so I check every possible vacuum hose and the maf. Then after replacing most of the vacuum hoses around the intake manifold, and upgrading to the 710n.

I was now holding 11psi, stock, in 1st gear. Running through the gears I saw a similar pattern to yours.

So I wasn't sure if I still had a leak or my maf was on its way out, since I would'nt consistenly hold 18psi.
Old 09-30-2007, 07:41 PM
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Pefecto. Won't last for long, enjoy it while the waste gate last Stupid K03 on Xsauce.
Old 09-30-2007, 09:42 PM
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i get pretty much the same numbers except i dont think i ever hit 20
Old 10-02-2007, 04:42 PM
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Default Yeah me neither...

and I thought I was the only one that was experiencing this.

The most I have ever hit was 18. I haven't spiked up to 19-21psi, like it seems you are suppose to.

Could it be that something is still off on the car?

I don't have a CEL or a boost leak as far as I know. I'm going to try to get my car vag-com.
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