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how much boost or hp can they hold ?

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Old 07-22-2007, 02:39 PM
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Default how much boost or hp can they hold ?

i want to know how much boost or hp 450cc can hold on my vitara setup ?
Old 07-22-2007, 02:45 PM
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I'd say probably 70-80hp per cylinder
Old 07-22-2007, 02:55 PM
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Default Re: how much boost or hp can they hold ? (Manny86)

450cc-350whp
Old 07-22-2007, 03:44 PM
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Default Re: how much boost or hp can they hold ? (integraRS-T)

ok i just wanted to make sure so 17-18 psi would be good then.
Old 07-23-2007, 02:03 PM
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Default Re: how much boost or hp can they hold ? (Manny86)

that depends on what size turbo u runing im prety sure u dont need 17-18 psi for a t3t4 ,wit a good tune u can get 350whp aroun10-12 psi
Old 07-23-2007, 06:55 PM
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psi= jack ****
Old 07-23-2007, 08:49 PM
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Default Re: (quicksilver1689)

i say 350whp is pushing it for 450's i say ~300 thats what a tuner told me when i was getting my car done.
Old 07-23-2007, 10:30 PM
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Default Re: (quicksilver1689)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quicksilver1689 &raquo;</TD></TR><TR><TD CLASS="quote">psi= jack ****</TD></TR></TABLE>

haha its all about the CFM'S
Old 07-24-2007, 12:38 AM
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yep
Old 07-24-2007, 05:18 AM
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Default Re: (Mr Wonderfull)

The tuner managed to pull out a bit over 330 whp on the 450cc injectors on my previous setup... it was basically as far as we could reasonably push on them. stock regulator, stock lines, stock rail, walbro 255hp drop in, etc... nothing special.
Old 07-24-2007, 10:27 AM
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In my vitara setup my 450cc where almost maxed out and i was at 266whp.. later after i sold the car it made 280whp on the same injectors and they were almost at their limit.
Old 07-24-2007, 11:22 AM
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Default Re: (fjt)

I would say 280-300.
Old 07-24-2007, 11:25 AM
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Default Re: (preludestud11)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by preludestud11 &raquo;</TD></TR><TR><TD CLASS="quote">I would say 280-300. </TD></TR></TABLE>

I agree. And that would be with the IDC's pretty high.
Old 07-24-2007, 12:27 PM
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Default Re: (herecomesboost)

well I guess I should have figured in that this setup would be turning more rpm than I was with my f (only 6250)... and as I understand it, rpm eats up duty cycle.

like I said though, I managed just a bit over 330 whp.
Old 07-24-2007, 01:00 PM
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Default Re: (twkdCD595)

^^ every motor takes differnt amounts of fuel to achieve the same hp. some will be a little higher, some might be a little lower, Im sure you could pull 350 out of them if you jack up your fp and run high % dc.
Old 09-19-2007, 10:55 AM
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Default Re: (preludestud11)

well when i got my car tuned iT made 312whp at 6000rpm and the injectors(525cc) where at 100% duty cycle so i was told to upgrade to 680cc, but instead went with 780cc (room to play with later) and getting it retuned now with HONDATA ****S300**** .......as of rignt now in the middle of the tune im pulling 250whp with 7psi.
Old 09-19-2007, 01:42 PM
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Default Re: (tony413)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony413 &raquo;</TD></TR><TR><TD CLASS="quote">

haha its all about the CFM'S </TD></TR></TABLE>

lol
Old 09-19-2007, 06:21 PM
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Default Re: (CoreyR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by laziebun &raquo;</TD></TR><TR><TD CLASS="quote">well when i got my car tuned iT made 312whp at 6000rpm and the injectors(525cc) where at 100% duty cycle so i was told to upgrade to 680cc, but instead went with 780cc (room to play with later) and getting it retuned now with HONDATA ****S300**** .......as of rignt now in the middle of the tune im pulling 250whp with 7psi.</TD></TR></TABLE>

having room to play with is a good point.


on stock fuel pressure you will max thosse injectors out around 300whp give or take
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