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low boost

Old Jun 3, 2008 | 08:03 PM
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Default low boost

since i changed my vp44 about 3 weeks ago,truck run good and i got alot of fuel now,
in fact i got so much fuel that egt get out of control too fast
and i never had this before,but i saw that boost stop building around 20 and if i push hard enough and carefull not to go too high i can go to 25 but i have to stop there cuz egt climb to 1400 at
that point....

ive stacked my smarty whit my edge and now truck pull stronger than ever but i have to watch egt closely,
even before i put smarty into the equation i hadnt over 25psi of boost but i had no egt problems

i was accustomed to see around 40psi easy

maybe a air leak?

since i put my smarty on RPM-MPH-BOOST-EGT are all connected to the same pedal DAMN I LOVE THAT THING,just have to find why it dont go over 25 and at 40psi it will be perfect

any clues guys?
 
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Old Jun 3, 2008 | 09:16 PM
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Default RE: low boost

yank your map sensor and clean it off with some contact cleaner or carb cleaner. then check all your boots and make sure they are tight.
 
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Old Jun 3, 2008 | 09:19 PM
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Default RE: low boost

I noticed a bit less boost with the Smarty than I did with the Edge alone.

BUT, I also noticed lower EGT's with it.

If I have the Edge cranked up, my times on the track were a bit slower because it would de-fuel and I had to back out because of the temps.

Now, when I cranked the Smarty up and turned the Edge down, the EGT's came into check and the times got faster. But, I wasn't bouncing off my boost limiter either.

Try turning the Edge down and come up on the Smarty.
 
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Old Jun 3, 2008 | 09:27 PM
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Default RE: low boost

edge on 2-5 and smarty on 2-4-6-8 all does the same effect
even whit edge on 1-5

ill try that drew
 
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Old Jun 3, 2008 | 09:30 PM
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Default RE: low boost

Rich. . .you just reminded me of something. . .when I bumped up the timeing on my smarty alone my EGT's were lower, then when I bumped the rail pressure, my EGT's and boost numbers both went down. getting the fuel in sooner I do know lowers EGT's and there is also less heat in the exhaust so there is less energy going to the turbo.

woli's issue. . .I'm just starting with the simple stuff I guess.
 
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Old Jun 3, 2008 | 09:35 PM
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Default RE: low boost

That's what I'm doing with it right now.

I have the timing bumped with the Smarty, not a lot of advance but a bit. And I'm using the Edge's timing too.

I have the TQ management turned off and it comes on pretty good down low.

But, yeah, you're right, the boost comes on lower and just doesn't peak as high.

I think I may have to retard the timing juuuuuust a bit though. I'm getting a bit too much smoke under low throttle and I have the Ege on 1 and the Smarty on 1 right now. It'll actually haze pretty good. Especially since I just changed my nasty fuel filter. [:-]
 
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Old Jun 3, 2008 | 09:39 PM
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Default RE: low boost

i had low boost before putting smarty on.....
i have too much fuel so too much egt
 
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Old Jun 4, 2008 | 12:52 AM
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Default RE: low boost

I still like the leaky boot idea. Maybe you should replace em with those silicone ones?
 
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Old Jun 4, 2008 | 06:04 AM
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Default RE: low boost

guess what mayfair?
i already did buddy....

but if its a leak why boost is building quickly till i hit 25 psi???
 
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Old Jun 4, 2008 | 11:29 AM
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Default RE: low boost

You got the silicone boots? From where?

I didn't realize that you were building boost quickly to 25lbs. I thought you were snailing up to that point.

Disreguard

 
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