hi all ,,i have a 1993 wrx import
just fitted a/ front mount intercooler/td05 16g turbo as it had a tdo4 on it ./z4 ecu with stage 3 chip what was set up for td05 and f/m intercooler
ticks over very nice runs well but ,,it starts to boost then cuts out like its hit a wall /backfires and puffs a bit of black smoke out of back box

i have put my standerd top mount intercooler back on,,still the same and re fitted my ecu ,,could the turbo be duff ,, and when its reved hard stood on drive ,,it revs well no smoke or miss

any help would be good thanks

 

Its called boost cut mate try resetting your ecu first, does the engine light come on?

 

it come on the 1st time i took it out for test drive then din,t come on any more
thanks for fast reply

 

2 solutions (as your symptoms sound like classic boost cut due to over boosting)...

1. Manual boost controller (somewhere like Well Lane can do this)
2. Remap it properly (£600 map is better than a dead engine which is likely if your car is overboosting and therefore running lean due to more power).

HTH.

 

sounds like boost cut like i said. Where you from ?

 

im in bradford west yorkshere
thanks andy the only thing iv got difrent now is the td05 16g and the z4 ecu ,,is it the turbo or the ecu thats making it do it ,,i was going to put the td04 back on it tomoz

 

did you sell the pug choc

 

I would hazard both. The ECU is on a generic map so I would assume that the greater amount of air flowing from the FMIC is giving the turbo more boost over a TMIC. I'm not 100% as I've been away from Scoob ownership for 2 years.

I would personally call a reputable Subaru independant specialists tomorrow and explain your issue with the exact mods you have. If it's overboosting I would really concern myself that the engine is running lean.

Yep. Got a car 10 years younger (little 106) and £500.

 

iv got my old top mount intercooler back on its the same ,,,
shame you had to let the pug go ,,,save for a scoob now

 

Defo needs to be looked at.

Will hopefully get another Scoob eventually when I'm on decent craftsman/engineers wages and not apprenticeship fodder. Will have to get back into a club scene.

 

Defo fuel cut mate,get it remapped on normal fuel,

 

had similar problem with mine when i fitted fmic and induction kit,but engine light was on it was map sensor?

 

thanks mark ,,im going to try my old turbo back on it today if that dont work ,,i think im going to put it back to standerd as it run well before i fitted the bits ,,and sell the bits ,,better than blowing it up ,,lol,,,

 

sorry to sound fik ,,how do i reset the ecu ,,

 

All here... Main Heading Goes Here

 

Do you have a boost guage?

The fuel cut on a z4 is about 1.1 bar.

Dave

 

yes i have a boost gauge and its going to about 1,5 ..so im thinking its getting 2 much boost ,,,

 

Definitely,don't sell the bits just get them set up.

 

1.5 bar of boost

****.

 

who was the "stage 3" chip from.

 

Something has to have moved the fuel cut up as you wont see anywhere near 1.5bar on standard fuel cut, you get to 1.1 then headbutt the windscreen.

I have a 93 wrx running about 1 bar on a z4 ecu, td05 and front mount. 1.5 seems pretty high on a (i assume) generic map chip?

I'm going to apexi FC + commander next!

Dave

 

hi guys ,,,i took it all of today and fitted ,,my turbo ,,my intecooler top mount and my ecu ,,and it still did it ,,,?? some one thick like me had the boost pipes wrong ,,i had the one that go,s near the maff [air intake ] going to actuator ,,derrr, the boost gauge was not far off 2 ,,,,i swopped them around and it boost under 1 now ,,run ok ,,put the f/m back on and z4 ,,it still cut out but not as bad and not as much boost,,but still 2 much ,,so i am puting it back to standerd but will leave the f/m on car untill i can afford it mapping right ,,

thanks alot for all your help ,,daz ,,

 

back once more,, just took the z4 ecu out to look at the chip ,,i think its a no name thing all it says on it is ,, japan mbm27c1028-20z ,,and sticker on top of it says subarudoners ,,,????? maybe this is the problem ,,,just pluged my old ecu in with the f/m on and it runs very nice and boost right ,,,

 

hi guys sorry im back ,,,i put my top mount back on and my small td04 with the z4 ecu and it still did this bad cut out thing
one of my mate,s has just been he as the same car standard intercooler /turbo /we put the z4 ecu on it and it went like a stabded rat ,,,its was fast and he said it is boosting more ,,,
the only thing he has what,s uprated is a wellbro fuel pump mine is standard
could this be the problem
thanks for any help

 

for a start you cant run a z4 ecu on a tdo4 turbo it is just not set up right, secondly yes maybe you could have a fuel pump problem, what was it boosting on your friends car??

 

hi just put the turbo back on to try it ,,td05 is going back on ,,,it was boosting at id say 1.1 on his deffis ,,

 

this is what the add sead when i bought the ecu ,,

Will Fit Any 93 on 4 Plug ECU Cars

REMOVED FROM MY 94 WRX STI

A PLUG IN AND GO ECU. IDEALLY SUITED TO RUN WITH OCTANE BOOSTER UPRATED FUEL PUMP AND REGULATOR.

FEATURES ARE:

ELIMINATE 180KM TOP SPEED

RAISE REV LIMITER

BOOST RAISED TO 1.0 BAR

ELIMINATE BOOST LIMITER

MODIFICATION FUEL CORRECTION MAP AND IGNITION MAP

CHANGE QUORUM ( K )

CHANGE LATTICE OF THE MAP
( RPM , IGNITION TIME )

MODIFY EVERY CORRECTION POINT

 

It may have been worth speaking to a Subaru specialists before you bought the ECU, Stig. I'm sure someone like David @ API would have found 5 mins to go through what the Ad "claimed". This is why I'm very wary of getting bargains off Ebay.

 

take the lid off the ecu and reconnect the J1 resistor. you can then run the original map from the z4 ecu. the chip is probably causing the overboosting.
either that or the boost plumbing is wrong after fitting the new turbo

 

thanks guys ,,i just dont understand why it run my mate,s car right ,,no over boost ,,or boost cut
thats what make,s me think its the standerd fuel pump ,,
i checked the boost pluming and its same as his ,,,
his deffi,s run at 1.1 ,,,my gage is a cheap swoosh thing ,,
where is api andy thanks