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More boost?

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17 replies to this topic

#1
4G63EVO0

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can you get more boost if you run 510cc evo injectors and walbro fuel pump with chipped ecu to suit mods ? 

 

anyone know how to achieve 14psi or run that using a tdosh vr4 turbo ?



#2
CLuTZ

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You should be able to run 15psi easy as. Grab yourself a decent manual boost controller and a boost gauge



#3
4G63EVO0

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ive got a gfb boost controller so that shud do aye my block is std but shud handle that easy



#4
jack be nimble

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#5
evo-gsr

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:lol:


[qoute name="BMGTZ" post="331212" timestamp="1467451744"]I don't know anything ...
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#6
Hyper_Mike

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^^^^^ Hahaha



#7
CLuTZ

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Take your time to set it up properly- little increases at a time to get it where you want it.



#8
4G63EVO0

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thanks



#9
LumpyVR4

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I'm getting in a bit late, but ages ago I did a 450cc injector J spec VR4 into a Cordia. 100% stock (well it had a dump and a 2.5 exhaust) and ran it at 15psi all the time with no dramas.


ECM Link, 399 MAF, 560cc injectors, 270 cams, TD05-20G @22psi, 3" dump, full 3" mandrel exhaust, intercooler, Fidanza alloy flywheel, 4 bolt LSD, EVO IV brakes, Strut braces, coil overs and sway bars.


#10
MDK87

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I've also had a VR4 engine with 14b + 510cc + walbro255 @ 15psi 

~80% peak duty cycle on 38psi base pressure (it's probably a lot cooler where you are though).

 

Went well!


Edited by MDK87, 13 July 2014 - 02:48 AM.


#11
4G63EVO0

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LumpyVR4 - im running a external wastegate and standard vr4 exhaust system 

#12
4G63EVO0

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MDK87 - running standard turbo so once i put the 510cc injectors and fuerl pump shud see it boost more when i turn up the boost 



#13
CLuTZ

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LumpyVR4 - im running a external wastegate and standard vr4 exhaust system 

 

External with standard exhaust?? Why would you??



#14
4G63EVO0

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yea external gate with standard or 2.5inch exhaust 



#15
evo-gsr

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A bit pointless having that setup with a standard exhaust and turbo...
[qoute name="BMGTZ" post="331212" timestamp="1467451744"]I don't know anything ...
Trust in the master of taxis.... He will set you straight[/quote]

#16
Cranked

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Standard or 2.5 inch?
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#17
Marc

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Dat's choice bru.....


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#18
White Knight

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Mate, I know it sounds all are kind of having a go. But install the 2.5.inch or 3 inch if you can and you will see a couple of psi increase.
See how you go, then look at a boost controller, whichever that may be.
I'll back Clutz and assure you that small gains as you go mate. I cant recall the boost cut on a VR-4 engine but from memory, about 10 years ago, mine had a cut around 16psi.
With a 3inch it had about 11psi and I used to wind it to 15, it made 220hp at the wheels and it was a giggle.
And just to show my age it was with a td03/04 hybrid. Basically, have fun, but do your supporting mods first my friend, exhaust etc....
Cheers.


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