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thanks lauren for some more good info :thumleft: .i have only driven my car reasonably quickly on narrow back roads,i have experienced the quick rear end step out(not half as bad as a lowered 318is e30 bmw i used to own!)but no understeer,and yes i dare say on track it will definatly show up the und...

I think all posts in this thread are relevant It's a very interesting discussion :thumleft: have to agree here.ive not driven my mr2 much really but have thrown it around a few back roads near me and i am currently in the process of modifying the car, and gearboxes/lsd`s are something i am curious ...

as limey said it could be the rings but acording to the book 178psi is std 128 psi limit.also with bigger cams you loose compression due to the longer valve overlap.

Cheers paul

Cheers the 2 pauls.one last q.what thread is needed for the t piece?.cheers

sorry should have been a bit more detailed! I am after a low pressure light and want to keep the gauge as is and working.got a light but not sure if it can be done or how to wire it if it does.

is it possible to wire in an oil warning light?.if so how?.thanks

Have you changed the oil?.that makes a difference.

Thanks guys.lots of info there.

No idea what injectors are in at the mo but the car is an 1989 car.

Hi limey,im building a rally/track car.just want more go.my basic thoughts were to fit parts to it,eg cams ,ecu as an on going thing but need everything to work together,eg no point putting hot cams in if the std injection/ecu wont run it,hence the thought of running the original ecu as ignition onl...

Thanks limey thats the answer i wanted.not sure now what to do.interesting though paul that you say itb or carbs dont make much difference.another question then will the original injection setup with aftermarket ecu work well with decent lift/duration cams or will it be restrictive?.

I was thinking of fitting carbs to it to get a bit more go without the expense of fitting an aftermarket ecu to it at the moment.

Mmm.was hoping to start with the std ecu to run things while i got a decent ecu,otherwise i will leave the std injection system on.

will the std ecu run as ignition only?
if it will what parameters will need to be used?.thanks

thanks fella.

what is the std fd ratio on an 89 mr2?.read its 3.722 and 4.312!.also is there any diferent ratios that fit?.thanks

Hi guys.what gearboxes will fit the mk1 mr2 with the 1600 4age motor still in?.thanks