eddysti

hi all,well ive put my scoobyecu on and started first time,my problem is that when i took it out it splutters throughout the gears but idols fine,just wondering if this is normal when one of these chips just bin fitted,or i have another problem elsewere?any ideas?

i have a apexi air filter unit,3"ss bellmouth decat downpipe,ss uppipe,99sti intercooler,ported headers all bin wrapped and of corse my scoobyecu.

cheers eddy.

eddysti

bttt

eddysti

bttt

axgt_bwaii

iTrader: (6)

what car and ecu is it in?

eddysti

hi it is a 95wrx inport with a v7ecu


cheers eddy

axgt_bwaii

iTrader: (6)

has it got a td05 turbo? just wanted to make sure it was for the right car. scot.t is who will be able to help?

stew

eddysti

yeh m8 its got a td05 turbo.

cheers eddy

axgt_bwaii

iTrader: (6)

at least you know its for the right car tho. sorry i cant help any further.

d4ve_h4y

u saying its ok with stabdard ecu but dodgy with uprated?

electrical tracks all ok?

Delboy2

Are you seeing a CEL lamp?
Try carrying out the ECU reset procedure shown HERE then take it for a drive and see if the spluttering is still there

Cheers

David_Harden

Mate, if you remove the Scoobyecu, does it run fine??

eddysti

it had same problem but not as bad with z4 ecu and no chip.and theres no fault code.

eddysti

i read on ere that the maf or boost sol. could cause these problems,when idoling and i unplug maf it still runs as normal but when i put it back in it splutters a little but then ok idols normally,could this be it? or maybe standard fuel pump not pumping enough through ?

eddy

Scott.T

iTrader: (2)

Unplugging the MAF and still running doesn't sound right.
MAF and Lambda have a tendancy not to give a CEL.

If you had a similar problem with the Z4 then I expect the fault is not with either ECU or chip.

If the chip is one of my old ones it runs a Z4 base map so should behave in a similar fashion.

You could disconnect the lambda and go for a short drive to see if the splutter becomes more apparent.
Without the lambda you are relying soley on the MAF for fuelling.

eddysti

cheers i will try that,and post back when tried.do you have to use optimax or can you use bp ultimate

eddy

Scott.T

iTrader: (2)

I really don't think this is a fuel issue....
If it's not MAF then probably coil packs/plugs.
Coil packs are prone to fail and even crack/fall apart at the tip, under the rubber grommet that pushes onto the plugs.
The causes a weak spark which gets blown out by the boost.

If it was doing this on the standard Z4 it will do it even more with the remapped chip running 16psi.

eddysti

ive just diconnected the lambda and its still same,is it worth changing the maf and lambda,also got a crack in one of coil packs,is it worth changing the pack and plugs first,or maf aswel seeing as it still runs when unplugged.do you know any site i can order these parts off if needed.

eddy

Scott.T

iTrader: (2)

If a coil pack is cracked, this may well be the cause. If not then it won't be helping matters
Coil packs should really be replaced, new, in sets (about £50 each). If one is cracked the rest are likley to be on their way out.
For a MAF try www.japperformanceparts.co.uk or www.gradea-subaru.co.uk/

David_Harden

On the otherhand when I had poor running problems with my 95WRX, I also changed the coil packs (240 quid), but it didn't fix the problem.

Therefore maybe eddy would also like to buy some cheap coil packs from me? Nought wrong with them. 80 quid the lot.

Hmm, what else can I sell him.....

What condition are your seats in eddy? Suspension? Er, brakes. How about a Scoobyclinic backbox? Magnex mid-pipe? My loft is full of Scooby bits. It's a wonder the whole lot hasn't come through the celing yet!

David

Scott.T

iTrader: (2)

But were they cracked.
I had a guy with a wagon chasing a fault..I kept pointing him towards plugs and coils but he was adamant they were fine.

"plugs have just been changed and gapped, he kept saying"

Finally he got round to looking at the coils properly i.e remove the rubber hats. Emailed me a nice piccie of a cracked/cumbling coil pack tip.

"Could this be the problem", he sasked....
He changed them and all was fine and dandy......

David_Harden

Scott,

How do I remove the rubber hats? I wasn't aware this was possible.

eddysti

will actuator need changing also with running more boost?

cheers eddy

Scott.T

iTrader: (2)

They just pull off the end. They do go quite hard and perished though.

Scott.T

iTrader: (2)

Nope, it should all be sorted by the chip.
the only time the actuator needs adjustng, is if it has gone a bit soft. This will be shown up by it not acievingthe target boost in the map.

The only thing a weak actuator can do is cause the boost to be a little low or not hold.

eddysti

thanks for all advice, im going to change my coils,plugs and maf,and hopfully that will do the job. i will post on result when done thanks again everyone for advice.

cheers eddy.

David_Harden

I just changed the plugs on mine to PFR7B, which are slightly colder than the standard PFR6B plugs. Which should eddy use with the Scoobyecu (assumming he's using NGK)?

David

Scott.T

iTrader: (2)

6B's or 7B's would be fine.
Although I would advise the 7's if new ones are required.

eddysti

will a maf senser fit off a 94 prodrive.

eddy

axgt_bwaii

iTrader: (6)

ive just noticed your name "eddysti" i take it your car is a wrx sti? i thought scoobyecus was only for wrx? i may be wrong?

David_Harden

You'll need someone else to comment here, but when I was shopping for a new MAF for my Type R, I found a UK car MAF going cheap. I was told that WRX and STi MAFs were different.

Erm, I do have a MAF available (the one I changed turned out to be fine, and indeed looked practically new. A waste of 230 quid.

I'm skeptical it would be okay for your car. If you send me the numbers written on your MAF unit I'll check. I'm not going to sell it cheaply though because it's worth good money to me. Might save you 100 quid though.

David