R32 Rb25Det Conversion

[Exodus01]

Hey guys,

I have done a conversion on my r32 gtst due to the rb20 having issues and having my brothers 25 sitting in the shed... foolishly instead of just fixing the rb20 i put in the 25 and had countless issues and no solid facts to follow online (Some people would state complex amounts of changes and others very minimal).

I have finally got the engine in completely and running however idles really rough initially until warm and then has some sputtering and problems up high. This is an issue as the purpose of this is a drifter.

I have contacted autoelectricians etc to come and look and obviously they arent interested.

I also put it down to needing a tune?

Wondering if anyone knowledgeable on a conversion if theyd be interested in coming n taking a look? Im in Glenmore Park (Western Sydney)..

[Ben C34]

What ecu?

[Exodus01]

i have both the 33 and 32 stock ecus, 32 is in at the moment i believe.. i will confirm this arvo

Edited June 18, 2014 by Exodus01

[zebra]

so an ecu tuned for a 2L engine isnt running right. when hooked up to a 2.5L engine with 370cc injectors, and vastly different timing requirements

[Ben C34]

so an ecu tuned for a 2L engine isnt running right. when hooked up to a 2.5L engine with 370cc injectors, and vastly different timing requirements

Yep.

Crazy hey!

[Exodus01]

ive had both in, car behaviour is same on both.

[Ben C34]

ive had both in, car behaviour is same on both.

That's not possible.

Though it could possibly run shit no matter the ecu. But not the same type of shit.

[Exodus01]

i interchange them and it is identical.. which is why i assume it not to be ecu..

[niZmO_Man]

What else have you done to the engine? Changed the spark plugs?

Use the ECU that came with the engine.

[Exodus01]

the 32 ecu is same as was in the 32 the 33 ecu was a second hand one from stock 33.new plugs, new oil filter, fuel filter.. typical service and new AFM

[Calsonic14U]

how long was the motor sitting b4 it was put in? Could be gunked up injectors, stale fuel. Maybe try a compression test on the motor just to make sure no blown headgasket. Clean throttle body and check for any air leaks. Was the motor from a series 1 or 2 R33.

[Exodus01]

motor comp test came up good, the injectors were seized and when i was at JEM for my 34 adam said to hit it with 12v which i did and freed em up. fresh fuel.

[Ben C34]

I would bin those injectors.

Or at the very least get them cleaned and checked. That is if you like your engine.