I wanted to ask what I could do that can still be managed by the cars ecu and won't over stress any other bits excessively
I am aware if I uprate head then I have so much freeplay in increasing the boost. As you are aware I'm not a mega mechanic.

If I were to run a fmic would it be bolt on per se and I could reset the ecu and continue driving.

What about a decat or straight down pipe can these just be bolted on.

What about both would I then have to set the four up to accommodate these?

I have an eye on a few bits that I want. Namely a bolt on fmic which requires no cutting and no battery relocation.

Thanks...

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THIS IS MY 4. THERE ARE MANY OTHERS LIKE THIS ONE, BUT THIS IS MINE.
red st185, running 10 psi all gears, powerflow cat back, and air filter. oh and fab scoop splitters

You'll be fine with a stock ecu and that level of mods provided the basic engine is running well at the moment

Off the top of my head, I would start with:
Air Intake (panel filter or Induction system)
Exhaust and decat (only caveat is that you may get boost creep fitting a decat pipe)
Decent Boost controller
Decent dump valve (Bailey DVxx?)
FMIC

All pretty much bolt on/wire up.
Boost controller would need setting correctly.

Then look at the following:
ST205 head conversion (port and polish) - talk to TGT about this (they've been there and done it).
(Optional oversize valves, uprated Camshafts,...)

Pretty much depends on your budget.

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Vice Chairman
1990 White UK Celica ST185 - Project DTM
1997 Cream BMW R1200C (as seen in James Bond "Tomorrow Never Dies")
2005 Jaguar X-type 3.0 Sovereign AWD Automatic
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