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bjohnson991 09-19-2010 02:07 PM

boosting pressure
my car is normally boosting 18 psi but when i put it to the floor the psi goes up to 18 then decreases to 10. not a big jump right to 10 but after a few seconds it does. any ideas?

RcrsWetDream 09-20-2010 10:00 AM

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Normally I'd say that's just boost tapering off like it should, but that's a bit of a big taper... You could check for a boost leak, but also see what your tuner did to the boost and how he has it taper off.

I'm running 19psi peak, tapering to 14ish at redline for example.

basco 09-20-2010 10:03 AM

35 tapering to 28 :D

turmic 09-20-2010 10:33 AM

Lol...just have to gloat don't you Matt.

24 tapering to 21.

anxiouz 09-20-2010 12:57 PM

On my previous car I had a road tune done and to heighten the feeling of more power the tuner spiked boost. So it felt great and hit boost high and quick, but then boost tapered severely because he had to pull timing after the spike. So it was a lousy tune but initial impressions were great.

18 to 10 is pretty severe though. What kind of tune does the car have?

basco 09-20-2010 01:46 PM

haha Kirt...I've got to daily is 0 tapering to well 0

pzr2874 09-20-2010 01:56 PM

What gear is the OP doing these pulls in?

turmic 09-20-2010 07:13 PM

[quote=basco;250711]haha Kirt...I've got to daily is 0 tapering to well 0[/quote]

Haha, win. I just wanted to poke fun at you for gloating. OT

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