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Discussion Starter #1
Hello all,
I am getting my car out of hibernation and getting ready for its new MOT.

I have an R34 GTT engine in an R33 GTS-T Sepc 1 chassis.
Full Japspeed turbo elbow, downpipe and decat, HKS Drager cat back system,
HKS SPF with new purple filter, HKS oil filter, Apexi AVC-R boost controller,

I have to fit an HKS 2530 Turbo and HKS IS ECU,
now with the new MOT laws, if i left my CAT fitted all year round would there be a big difference in power after mapping?

Thanks Captain drift.
 

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Is it possible to create two maps or do you have a spare ECU that could be mapped with the cat and another without?

IMHO, if you're mapped with it and remove it aren't you going to be running lean?

I guess it depends on the range the mapping will accommodate?
 

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Discussion Starter #6
I am planning on getting it mapped at Abbey motorsport so will speak to them. I have also found a Sports CAT for £200.
 
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