Rav4Race

#1

Hi guys/Gals...

Am facing a problem:( I had an engine swap, from in my 2000 model Rav4 which i fitted with a GT4 ST205 engine.
Am getting a low turbo boost:( My turbo is

not boosting more than 0.4 bar:(

Do u think its because i havent changed the rear diff? Am still running with my 1AZ-FSE rear diff.

but can a rear diff reduce the turbo boost??

plz help and thnx again bros:)

Cuts_the_Pilot

#2

you changed the diff? did you just put another one of the same ratio or another one with a different ratio. If its different you will destroy your centre diff (assuming your still awd)

but no changing diff will not change the turbo.

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ST205 Group A Rallye GT-Four, #61 of 77............600hp GT3582rGRX133 Toyota Mark X 350s

Taskbot

#3

Wait, are you saying you put that in a truck?

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(\__/)(='.'=) This is bunny. Copy and paste bunny into your(")_(") signature to help him gain world domination.

presure2

#4

the diff will not change the amount of boost your running.

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Former Team 5SFTE pro member ;)13.6@108MPH, 5SFTE Powered

bccentaur3

#5

The diff shouldn't play any role in how much you are boosting. I recommend you get a diff that cna take the power. Check for boost leaks.

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98 Celica gt red- totaled deer94 Celica st black DD (bad weather beater)- totaled deer95 Celica gt silver- chassis sold88 Celica All-Trac (Burned to a crisp)94 Celica gt white (sold)In need of a rust free chassis!!!!

Rav4Race

#6

yes lol but the truck ur talking about weigh 1282 kg where as the celica weight 1380kg;)


>

QUOTE (Taskbot @ Aug 14, 2008 - 5:28 PM)

>Wait, are you saying you put that in a truck?

Rav4Race

#7

>

QUOTE (Cuts_the_Pilot @ Aug 14, 2008 - 5:25 PM)

>you changed the diff? did you just put another one of the same ratio or another one with a different ratio. If its different you will destroy your centre diff (assuming your still awd)

but no changing diff will not change the turbo.

OMG i hope that never happen:(
i will change it to the gt4 rear diff soon

DeathWing

#8

do a leak test on your intake, its probably becouse you are leaking air, also check your wastegate install , it might be stuck open or something

domyz

#9

dont forget to ground the pink wire that is on the St205 ECU to remove the intercooler fluid level Check engine protection.

Rav4Race

#10

>

QUOTE (DeathWing @ Aug 16, 2008 - 5:28 PM)

>do a leak test on your intake, its probably becouse you are leaking air, also check your wastegate install , it might be stuck open or something

thnx ill check these:)

>

QUOTE (domyz @ Aug 16, 2008 - 8:06 PM)

>dont forget to ground the pink wire that is on the St205 ECU to remove the intercooler fluid level Check engine protection.

the pink wire? explain plz

lubu

#11

Are you still using ur W2A setup? If not and you havent ground the pink wire then you're running in safe-boost mode, which is around 5psi I think.
You'll need to ground that wire so that the ECU thinks that the pump is still working, thus allowing you to run full boost mode.

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98% completion---aaRon

GottaGoTurbo

#12

Have you checked for error codes - the code 54 is the level sensor and will put the engine in limp mode.

lubu

#13

Just read ur other thread, seems that youve cleared the 54 code already.

http://www.6gc.net/forums/index.php?showto...p;hl=error+code

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98% completion---aaRon

Rav4Race

#14

hehe thnx mate! i read ur post there... yea i think ur right, ill have to change that rear diff asap. and concerning the fuel pump i will soon get the 255lph walbro + sard Fuel regulator. will also change the disk clutch to a single plate exedy. my ignition wires are on ship and should reach together with the clutch. but that rear diff, hmm i really need to do something about it. i will try not to run fast for the time being:(

>

QUOTE (GottaGoTurbo @ Aug 17, 2008 - 1:25 PM)

>Have you checked for error codes - the code 54 is the level sensor and will put the engine in limp mode.

yes bro the codes have been cured.

Rav4Race

#15

>

QUOTE (GottaGoTurbo @ Aug 17, 2008 - 1:25 PM)

>Have you checked for error codes - the code 54 is the level sensor and will put the engine in limp mode.

yep codes cured...check engine light is off, and ecu is happy:)
but am still unhappy:(

>

QUOTE (lubu @ Aug 17, 2008 - 1:18 PM)

>Are you still using ur W2A setup? If not and you havent ground the pink wire then you're running in safe-boost mode, which is around 5psi I think.
You'll need to ground that wire so that the ECU thinks that the pump is still working, thus allowing you to run full boost mode.

yes bro still w2a set up. i will change the rear diff on wednesday and check the wastegate. i will also change the fuel pump...

Rav4Race

#16

Hi am back again. Well ive managed to install the rear diff of the GT4 and i can feel that my car is running smoother. But the boost problem as expected is still persisting:( There are no error codes and ive changed my fuel pump to a walbro 255 lph and added a sard fuel regulator.

Can anyone tell me how much psi i should be running of fuel pressure????

I think the boost problem is because of some kind of leaks that i cant find:( The wastegate did not stuck open. Am boosting like 6 psi actually:(
Does anyone have some kind of tests to check where r the leaks??

plz help