getting there !
 

Its starting to do my head in !
Went to surrey rollers today and saw simon again .
Got a bit more and a bit better but still missing at 6k boost or no boost !
got 420/420 though at 1.35bar so getting happier
Any thoughts ?

Get Scott to map it.:-D :whistle:

No thanks it might catch fire !:p

Are you running vernier pulley's as could be bad cam timing.

if it's doing it wth and without boost it is unlikely to be plugs or injectors as the airflow would be different and the IDC less.

could be the crank/cam sensors are a bit dodge and failing at 6,000rpm.

Have tryed simons sensors out of his blob and his symtec but still there.
as said on the road no issue !

Are you still running a MAF.
I have heard that the forced fan airflow on the rollers can upset the MAF when an induction kit is fitted.

Yes i have a thought get rid & buy an Evo :norty: If needed i have a maf you can borrow.

as said earlyer maf! buy a proper ecu!

Why would i want a Evo when a scoob kicks 420bhp & 420lbs on a bad day !

Even with all you've done, I would go for the easy things first.

First thought was a plug blowing itself out, replace or regap them or just switch them around and see what happens.

The forced air issue Scott mentioned is interesting and very probable if the issue isn't there on the road.

changed plugs regapping as installing , not the maf as was run maf less on the symtec
simon has said its cam sensor related one way or other .
tryed a different sensor and still there .
Going to earth the cam sensor at the ECU and have another go:brickwall:
keep them coming !

was run maf less on the symtec

Not sure where the pick up for the cam and crank sensors are, normally shaft or pulley.
Have you changed either of these.

:cuckoo:Now this has come from my Dad:cuckoo:

Do you use a lightened fly wheel? try changing for an original or slighlty heavier fly wheel!:boom:

(:sos:something to do with rotational mass:sos:)

(if hes right:getmecoat:)

Errr Yes its a 2.5 with sti 5 heads !
poistion is fine as said it only does it on rollers and only at 6K rpm

Well can't see it being a sensor or anything like that if it's ok on the road, if it's only happening on the rollers then the comment Scott made on the forced air side kinda makes more sense.

hmmm the dreaded misfire, mine happens at 6.5k but only in 3rd or 4th, did a track day at Snetterton and for the first 2 laps of each session it seemed OK but once i got a bit of heat into the car it would start again

I changed the plugs but that made no difference, had a suggestion to gap them smaller but that made it run like a dog lol

Simon did come round the other day and adjusted a few things, the dwell on the coil-packs, he turned down the sensitivity of the crank sensor or cam sensor (can't remember which), he also adjusted the way these 2 sensors interact with each other at high rpm

Took the car out the other night and did about 6 runs going from 4k up to 7.5k in 3rd and never got a misfire (couldn't try it in 4th though as that works out about 125mph)

thanks for the input
Got a new coil pack yesturday so will give than a go as i do not have your option as on ecutek.

the ecu's both standard and simtek logged cam errors...

it occurred only on the dyno due to more engine heat.. you can repeatedly do a run rather than wait for a break in traffic, turn around etc.. but it is not right that it should do this.

Suggested grounds which appear to have resolved it.

Think about fans and airflow meters and ram air.. ie. at 6k rpm do you think the fan will be flowing faster air at the filter than the engine is consuming?? deffo not.

Simon

should I take offence to this comment?

spend many hours fault finding and suggesting avenues and mapping on this car and resolved the issue.. suppose not possible to please all the people all the time.

Dont take offence Simon.
You will always get this mapper is better than that mapper
We know all you guys are petrol heads and have pride in what you do.
You all have diferent methods and approach to what you do.
Dont envy you guys,loads of hard work can all be undone by a single engine blow,lets face it its always the mappers fault and not the owners.
Keep up the good work guys.:doubleup:

As Martyn says Simon, don't take offence at all.

As is the case with my scooby, it is a process of elimination. And only by going through the various steps along the way with you am I getting to where I want to be.

Scott, like yourself is a very good mapper and a lot of people swear by and stick with him. And that's all it is really mate. Just a random comment.

There are only two mappers and one dyno I would use and think you know who that would be simon
I'm well happy and find you very approachable and keen to solve the problem .

Really????

Bob Rawle and who?

:drumroll::drumroll::drumroll::drumroll::drumroll:

Now available for Weddings and Barmitzvas.

LOL
Pat , Simon & Charlie The Three Amigos !;-)

I actually meant tyo put a smile in my post... I wasn't being serious

:doh:

lol ;) :D

What a prat. lol

Steve