I e mailed Abbott regarding "chipping" the my car (2.3 auto 91'),he said there was nothing he could do,apart from supply a ITG filter.
Is there anyone else who could do this,or is just that mine cant for some reason be chipped.
The only things I can think of on a non-turbo are:
FSE Power Boost Valve
Other than that you'd be talking big money - i.e. bolting on a turbo.
I fitted the FSE valve to my old 9000XS 2.0i - though didn't notice any performance difference...
Abbott/Hirsch etc do concentrate on the Turbo's as they are a lot easier to upgrade.
To be brutally honest, if you want more power, it would be cheaper to change to a turbo car. The LPT's are 150BHP as standard, but can be chipped (via ECU) to 190BHP. FPT's can be sorted too, though at 200BHP, you'd notice the difference against a non turbo 2.3.
Can anyone else suggest any other mods that can be done relatively cheaply to a non turbo 2.3??
Try this website for lots of ideas and how-tos. I think you may be best concentrating first on the suspension/ driveability side of things. A lot can be done cheaply with poly bushings. And there's not much point spending a fortune upgrading the engine if it goes like a pig round corners.
Try Optimax petrol and see if makes a difference, it probably will (does for me). The other thing is to think about an Ecotek device . I definitely notice improved throttle response in the N/A 900.