[stevo_nz]

i have an rb20det running this turbo setup: http://www.trademe.co.nz/Trade-Me-M...Performance/Turbos/auction-105391831.htm?p=47
and big front and front facing plenum and fuel pressure reg,
im running a standard auto ecu wich i think is my problem its getting plenty of fuel (60psi) but she jyst lags lags lags then only boosting 5psi by the time i have to change gear.
can anybody help me???

 

[pieline]

i am having the same problem. i am guessing your new turbo only starts to boost at about 4500 revs? then you have to stop because you have to change gear.

this is because the optimum performance of your t3/t4 turbo is higher than your engine can safely produce. ie 1.5 bar or higher.

to overcome this you need to replace the ecu as the stock ones will be limited to the power out put.

hope this helps mate.

 

[stevo_nz]

would a performance chip be sufficient?

 

[Bigchief]

a performance chip will only force more fuel in etc, where with a aftermarket ecu you have more control on re-mapping yr car to get the best out of it bud.....:cheers:

 

[pieline]

Go with an uprated ecu everytime fella! im looking for one now for me!

 

[davegtst]

He can't change the ecu its an auto. Probably best bet is a greddy E manage with the extra injector and ignition harnesses. Or change it to manual then swop the ecu's.

 

[stevo_nz]

sorry i forgot to mention it is manual but running auto ecu,

 

[BIG.SMOKE]

^^^ wtf you shure ?

 

[stevo_nz]

yeah thats what it says on the ecu in white pen from the wreckors,

 

[stevo_nz]

when i tested my computer i got the code that meant it wasnt picking up the auto gearbox since its now manual. could it be possible that its running on limp mode?? im looking for manual ecu to try out and see if that works

 

[Nize]

Not in ''limp home mode'' as this limits revs to 2K.

Sounds like the timing could be off, or a possible boost leak, maybe sensor (AFM or TPS) problem... or as stated the turbo may not be well matched to the engine.

 

[Bruce-m]

Get yourself a power fc or E-manage that way you can advance the timing right up to bring the turbo in a lot sooner.

 

[stevo_nz]

selling car!

heres my vl im selling it on trademe and moving to cairns in australia asap

http://www.trademe.co.nz/Browse/Listing.aspx?id=107278324

 

[Mafo]

ECU, and get it mapped professionally