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Old 01-05-2008 | 06:35 PM
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Default T34 boost

What is max boost a T34 .48 will do? thanks
Old 01-05-2008 | 06:49 PM
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what injectors would help a bit.....ie ur 803's will hold 22/23 psi.........but bigger will hold more.....but a t34.48 is good for a 30/32psi spike and a held 28.........(how long it lasts...???..)
Old 01-05-2008 | 06:56 PM
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Originally Posted by pete mcrash
what injectors would help a bit.....ie ur 803's will hold 22/23 psi.........but bigger will hold more.....but a t34.48 is good for a 30/32psi spike and a held 28.........(how long it lasts...???..)

im running 803's , T34, 500 cooler, breather kit, swirl pot ,group A filter, 3 mar map etc, curently peaking at 24psi, holding 21 at 333bhp im just intested what is max psi for my turbo
Old 01-05-2008 | 07:24 PM
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Ran my 803's at 28 psi no probs.
Old 01-05-2008 | 07:25 PM
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Originally Posted by KSA-Cossie
Ran my 803's at 28 psi no probs.
gd gd cus im hoping to run 29 and hold 24/25 but is that right on the limit for turbo/injectors?
Old 01-05-2008 | 07:28 PM
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Mine weren't totally maxed out but i didn't want to go any higher m8.
Old 01-05-2008 | 07:45 PM
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Originally Posted by KSA-Cossie
Ran my 803's at 28 psi no probs.
...................but ur on about PEAK..........they wont hold it..
Old 01-05-2008 | 07:47 PM
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Originally Posted by RS LOZWORTH
gd gd cus im hoping to run 29 and hold 24/25 but is that right on the limit for turbo/injectors?
....i'd never advise anyone to go greens t34 and over 22/23 held.................bang....mine did at 23psi.......
Old 01-05-2008 | 07:49 PM
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Aye sorry peter,they held 25 psi no bother.
Old 01-05-2008 | 07:51 PM
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Originally Posted by pete mcrash
....i'd never advise anyone to go greens t34 and over 22/23 held.................bang....mine did at 23psi.......

what went bang?
Old 01-05-2008 | 07:55 PM
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my engine.........................and my pals at 23 psi on 803's...........on a t34.48........every tuner i've used has always said no more than 23psi........
Old 01-05-2008 | 07:56 PM
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Im guessing his engine m8.
Old 02-05-2008 | 05:24 PM
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Originally Posted by RS LOZWORTH
gd gd cus im hoping to run 29 and hold 24/25 but is that right on the limit for turbo/injectors?
That's exactly how my old one was set up with the same spec, although it had to tail off to 20psi for the limiter, the 803s being the limiting factor (the pump was re-wired too!).
Old 02-05-2008 | 05:31 PM
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You set the boost level to what your engine will run without running lean or pinking.. This could be 29 psi 21 psi or whatever. A professional tuner will set this for you job done, i would never just set the boost and "hope" its ok.

diffent injectors will flow at diffrent rates plus a host of other variables to consider, fuel pressure, fuel flow from the tank etc etc

Last edited by lamb chops; 02-05-2008 at 05:33 PM.
Old 02-05-2008 | 05:58 PM
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i will be running t34.55, siemens blacks 55lb, 500 cooler, standard motor, 3 map bar, MSD chip and i've been told it will peak 28psi and hold around 24psi
Old 02-05-2008 | 06:18 PM
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36psi spike, 30-32psi held, greys, low comp, 8250 rpm. (Not my car)


It killed 3 turbos last year.
Old 02-05-2008 | 11:06 PM
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Originally Posted by BigErn
36psi spike, 30-32psi held, greys, low comp, 8250 rpm. (Not my car)


It killed 3 turbos last year.

but thats got some mid range punch!
Old 03-05-2008 | 01:27 AM
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Its great fun on the twisty A and B roads with its combination of revs and boost, as long as you keep it on song it fuckin flies.
Old 04-05-2008 | 06:48 PM
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hmmm.... another question to all: what AFR do you have at full boost with t34.48 and 803's or what AFR is good for this spec by your opinion at 98 RON and std comp. ratio?

Last edited by Yura; 04-05-2008 at 06:52 PM.
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