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Discussion Starter #1
Gents, I need advice on how-not-to-screw-up my car. :)

When I bought the car I knew the following:

1990 MR2 US-turbo (engine got screwed by first dutch owner)

1993 J-spec gen2 engine swap, so that aint bad.
BUT!!! the guy who did the swap left the US-ecu in the car and just remade the wiring-loom.

Mods:
Apexi Air intake
Mongoose exhaust
TwosRus downpipe

This delivered:
197 rwhp with one fubar a/f ratio, see sheet:
http://www.carpron.com/multisite/d/54914-1/17-11-03.jpg

Then, the following mods:
TwosRus MBC @ 15 psi
seperate FPR (reduced pressure)
result: 244 rwhp with a better a/f ratio, see sheet:
http://www.amroskam.cistron.nl/MR2/17-04-04.jpg

Now comes the following:

I want to upgrade my engine with the following:
Greddy IC
CT27 from ATS

What do I need more to get a good A/F and not to ruin my engine.

Thanx for reading this story, hope it makes sence.
 

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633 Posts
ats has a rom tune available as a package deal with ct27.
 

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Along with an fpr to bump up the fuel pressure a little. All of that should net you 270ish rwhp which is maxing out the stock injectors. To obtain more you would have to get a larger fuel pump such as the walbro 255lph or supra turbo unit along with 550cc injectors and ATS can make a rom tune for that as well.
 

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Discussion Starter #4
The problem is I'm located in Holland, and offering my old units up to ATS isn't really an option.

How bad is it to max out the injectors?
 

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It's not, you are just maxing out the potential to add any more fuel with that size injector to the mixture.

Also, ATS ships internationally.
 
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