2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

Will I need a fuel pump?

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Old Sep 6, 2012 | 02:52 PM
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killswitch1209's Avatar
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From: santa fe
Will I need a fuel pump?

I have a ls 2.2 turbo I built the motor I was goimg to go with e85 and 80# injectors was wondering if I need a fuel pump I want only like 20-22 psi and like 420-440whp do u know if the stock one will work wih the 80#?
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Old Sep 6, 2012 | 03:56 PM
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not sure how the 2.2 pumps are but im goona go with yes lol
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Old Sep 6, 2012 | 05:31 PM
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From: modesto
If anything put a stock lsj one in there...that should drop right in..someone correct me..some of the after market ones don't live long with e85..
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Old Sep 6, 2012 | 05:37 PM
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06-07 lsj fuel pumps were fine i thought i read sumtin bout the 05's werent as good..could be wrong
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Old Sep 6, 2012 | 05:39 PM
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brian.olsson has a stock 06 lsj fuel pump with 50k on it for sale
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Old Sep 6, 2012 | 05:49 PM
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yes e85 puts alot more stress on it I'm at the top of the window and i'm just below 400 whp i'd get an upgraded one
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Old Sep 6, 2012 | 08:40 PM
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Do not use fuel pump for 05. I have an 05 lsj and was recommended by zrated to upgrade my fuel pump before doing anything
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Old Sep 6, 2012 | 10:31 PM
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Make sure you do the boost referenced fuel pressure system also and probably the fuel pump rewire also.
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Old Sep 7, 2012 | 10:24 AM
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Originally Posted by elecblue06
yes e85 puts alot more stress on it I'm at the top of the window and i'm just below 400 whp i'd get an upgraded one
How do you figure?

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As something changed? You have not been updating your build thread in months.
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Old Sep 7, 2012 | 10:26 AM
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i was running 15psi on E85 with stock pump just a rewire
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Old Sep 7, 2012 | 10:53 AM
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From: newburgh,ny
Originally Posted by ebristol
How do you figure?



As something changed? You have not been updating your build thread in months.
that was on 14 psi with no timing (about 6* less then usual) cuz my ecm has been freaking out (the car randomly wont go into pe more) i normally run 18 psi and like 24 * of peak timing..

so call me bench racing but I dont think i'm too far off.. the car was only pushing 40 lb/min that day when it was pushing 46 lb/min the day before
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