depending on much of a boost differance between to new turbo and the old on you shouldnt need to change the map sensor(1.0 bar good up to 10lbs of boost, 2 bar good for 20lbs)but when you do you need to reprogram the computer, same as when you upgrade injectors. but im almost wondering if the...
ive been in a ef civic h22 and it wasent too bad, to make up for the extra weight slap on a nice tein or skunk2 suspension a thicker rear sway bar, a nice traction bar from explicitspeedperformance.net and some wider tire and it should be good for the rally
sounds like the thing is running lean as soon as the boost starts to kick in, with the bigger turbo you need to remap your fuel curves to match, get your self a air/fuel gauge and find out for sure. but im going to guess that your computer need reprograming for more fuel- hope this helps
the 4-1 is where all the pipes dump in to one collecter and the 4-2-1 is what the old school builders call " tri y" the 4-1 are nice but the tri ys are better flowing and less restrictive, and while what you did will work you would get better performance if you ran 2.5 all the way down although...
ok all a cat converter does is convert some of the methane and nox in to co2 and o2, after a while the screens start to get fouled up and restrict flow, and the stories the same as the egr system, they are nice for the enviroment but they do rob hp,
ok go out get the RIGHT computer for your car, drive it around for a while, then come back if youve got any more problems, your gas milage sucks couse your car has the wrong ecu
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