Hia guys can somebody help me or get me some useful info because i've tried possibly everything and does't help at all...

So the problem is that i've changed turbo on my classic impreza sti 1997 for td05h 16g i 've also changed exhaust manifolds and decat downpipe...
But the car seeems to be running on three cylinders when started and it sounds like it's missfireing...and after while it cuts out...so i found on forum that it might be a water temperature sensor..which i changed today and it still has same problem...i also changed throttle idlde valve just in case...

i didn't try lambda or maf so that might be the problem...or remap..just get me some info please cause i'm lost....cheers

 

if you changed from a td04 to a 05 itll need mapping.

 

It wont cause those problems just because it isnt mapped

 

we had a rb320 in the other day that was misfiring turned out to be one of the plugs on the injector managed to work itself lose it might be worth a check mate.

 

i didnt say thats causing his problems, just said it will need to be mapped if he has put a bigger turbo on.

 

It's a 97 sti so I would expect it had a vf23 fitted.
OP, did the misfire start after the turbo was replaced, did you replace the turbo or did someone else do it?

Tony

Ps, it would require mapping.

 

well i've had td05h stock turbo,but i swapped it for bigger 16g...but i don't think that causes the problem...cause when car worms up it drives pretty good...problem is when its cold...that's why i though it's temperature sensor...

 

LAMDA??????

 

well that one of my options..i just wanna be sure..

 

hia there guys...i've replaced maf sensor..and it doesn't help at all...do you have any other clues,cause i'm desperate...any subaru garage around bristol area..or someone who can do diagnostics???please help...

 

tileys subaru 01179 231 231 best to speak to Dave ball or Scott brady

tileys sponsor the club im in ,see below
,Dave

 

Have you tried leads or coilpack ?

 

Well...i've tried everything so i probably go for a remap...but i don't know if i have to get an aftermarket ecu..or i can use ecu from newer model...can u help me with this please

 

If its a 97 sti you will need aftermarket ecu to get it mapped,you cant just plug a later one in (99/00) as it wont work.

 

hia there...i have another problem with the car again...it started missfire at around 4500-5000rpm...i mean boost starts ok but then it just missfire like crazy... i've changed the spark plugs today as i wanted to stard with cheaper option...and i probably go for coilpacks...but there are bit expensive cause i have single onesand do u know where 's the best to buy them ..apart from sub dealership..??...cheers

 

Did you get the car remapped with an after market ecu?

Tony

 

Well it all started when it was remaped...simon couldn't turn the boost on ..

 

yeah...simtec

 

If its doing this I would guess its gone onto safe mode.

Is the CEL light on? Or does it come on and go off at all?

 

No..it's not showing check engine so i think it might be coilpacks

 

sorry to butt in and change subject but rescue dude you up for a meet in nov mate

 

Yeah, let me know when.

 

sweet in the falkalnds now till end of oct i let you know then