Ah, all sounds scary. I shall leave it for now, then like you say get it done before a mapping sesh as am skinto now as over a 1k has been spent setting it up to now with apexi, controller, fpr, pump, maoping and fuel!

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1998 ford st24, 186hp 2.5 v6- sold
1997 bmw e36 318ti, mint hellrot red- sold
1992 celica gt4 st185- td04 340hp/330lbs
1998 mercedes E280- sold
1998 pug 1.9 td- mile muncher!
1993 rx7 542hp savage monster!!
2007 BMW 335i- in the shop gettin built!!

I wouldn't call a 3 degree error a lot in timing, I would have thought a tooth on a cam belt would result in more than 3 degrees also, it depends on how many teeth you have on your pulley. Neither can I understand how a 3 degree timing error could wear an engine, det kills pistons, does it also ware bores and rings or am I missing something?

Car was running very lean before and then over fuelling when on boost, so engine had a bit of bad times for a while.

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1998 ford st24, 186hp 2.5 v6- sold
1997 bmw e36 318ti, mint hellrot red- sold
1992 celica gt4 st185- td04 340hp/330lbs
1998 mercedes E280- sold
1998 pug 1.9 td- mile muncher!
1993 rx7 542hp savage monster!!
2007 BMW 335i- in the shop gettin built!!

Previously it was weak on boost up to 4K RPM then very rich.
Could be a bore wash issue, but as I said earlier blow by the pistons has more loss at the bottom end.
I remember the old 2 stroke karts where the pushers had to run flat out to get the thing firing at all when the engine was needing a rebuild, very gutless out of corners but still quick by the end of the straight.

Agreed a notch out on timing is a lot more than 3 degrees. I personally doubt 3 degrees will make that much difference as there is normally that much safety margin in standard mapping.

I would personally enjoy the car as it is for a while, that torque will feel good. I suspect correcting a cam issue to gain top end will probably reduce the kick in the back at lower speed.

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If at first you don't suck seed, try drier grain.

Im still looking into possible issues with car and why its low on power, so took it A.E.D near mine yestaday to see what his views were. After a natter he suggested having a look at plugs as the colour tells you in a rough way whats happening inside engine.
They were white from intense heat! The tip has pinkled and cracked and basicly says theres no where near enough fuel going in, even though graphs show good results.
These plugs were grade 7 ngk irridium and fitted when car was mapped. They've done about 4k in total.

I've now stuck some new 7's in there with a smaller gap as was told the loss of power at top end could be spark blow out. We've upped the fuel pressure a tad and I will see tomorrow what plugs are like.
Wayne from aed said that my turbo is fine, due to me asking as was also told my power loss could be due to bad turbo by andy at veysport, but it spools low, and holds boost fine all the way to redline.

Still puzzled by loss of hp top end, any suggestions welcome.

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1998 ford st24, 186hp 2.5 v6- sold
1997 bmw e36 318ti, mint hellrot red- sold
1992 celica gt4 st185- td04 340hp/330lbs
1998 mercedes E280- sold
1998 pug 1.9 td- mile muncher!
1993 rx7 542hp savage monster!!
2007 BMW 335i- in the shop gettin built!!

Do you have a plot? I had similar things with a *bleep* fmic, fine up to a point then it became a brick wall.

The plot is on page one of this thread

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[color=#000080]ST205 WRC 1994
Hybrid turbo
Apexi AVC-R
Apexi Power FC (Not being used ATM)
Apexi Power commander (Not being used ATM)

Am I right in thinking this is a 185 engine running a 205 wiring setup/ECU?
If so what's running the tvis control?

I have a 185 engine that was converted to run 205 ecu, but the 185 loom remains. It now has apexi fc ecu. I'm not entirety sure of what my setup is, chris knows what it is.
What is tvis?

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1998 ford st24, 186hp 2.5 v6- sold
1997 bmw e36 318ti, mint hellrot red- sold
1992 celica gt4 st185- td04 340hp/330lbs
1998 mercedes E280- sold
1998 pug 1.9 td- mile muncher!
1993 rx7 542hp savage monster!!
2007 BMW 335i- in the shop gettin built!!

Tvis is the variable inlet system

Its pretty much identical to the st24 setup where half the inlet ports are blanked at low rpm. This promotes low end torque by keeping flow velocities high in the inlet ports
As the engine revs and starts needing more air all the inlet ports open to allow easy breathing

Thing is the 205 doesn't use this. So if yours has been converted and nothing done to the tvis then it will choke the engine at high rpm - kinda like what appears to be happening on your dyno plot

The rev 3 map sensor has replaced the rev 2 turbo pressure sensor and the correct intake sensors have been added to manifold and intake.
Quote from chris there, so does that deal with potential tvis issue??

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1998 ford st24, 186hp 2.5 v6- sold
1997 bmw e36 318ti, mint hellrot red- sold
1992 celica gt4 st185- td04 340hp/330lbs
1998 mercedes E280- sold
1998 pug 1.9 td- mile muncher!
1993 rx7 542hp savage monster!!
2007 BMW 335i- in the shop gettin built!!

sadly no...because the opening and closing of the TVIS via an actuator is controlled by the stock ST185 ecu

or as in my case it is RPM triggered by a feature rich aftermarket re-programmmable ecu such as MoTeC, Hydra, (not Apexi Power FC)



I think* the TVIS remains "open" if the vacuum source/ trigger is left disconnected... so maybe that isn't your issue.

dunno. good luck

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ST165 turbo 4WD
ST185 GT-FOUR RC Carlos Sainz Limited Edition 825•5000
ST185 turbo 4WD Carlos Sainz Limited Edition 2541•5000

As far as I can remember, TVIS springs open unless fed with vaccum and to do that requires drive to the valve, so if either vac or electricity isn't connected the ports will be open.

Worth a double check though.

Have you checked cam timing yet ? Still No. 1 on my suspect list.

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If at first you don't suck seed, try drier grain.

No haven't had timing checked. Is that something you and I could do or should I get a garage to do it?

This all came about because of andy suspecting knackered turbo. Thats why ipopped into aed as they know everything about turbos.

_________________
1998 ford st24, 186hp 2.5 v6- sold
1997 bmw e36 318ti, mint hellrot red- sold
1992 celica gt4 st185- td04 340hp/330lbs
1998 mercedes E280- sold
1998 pug 1.9 td- mile muncher!
1993 rx7 542hp savage monster!!
2007 BMW 335i- in the shop gettin built!!

We can check cam timing easily.

_________________
If at first you don't suck seed, try drier grain.