Would I Gain Anything With Exhaust Cutout On -5S ?

[XKLABA]

It will surely sound very angry, but I would only activate it on a drag strip or on a highway if I meet with a modded supra hahaha. I'm just scared that I will gain little with this mods. Like, how many have been able to break the 600whp marks on a dynapack with a pair of -5s ( on a rb26) ? Not to mention when I did 576whp, I still had stock intercooler, no water-meth and nistune maf ecu.

I'd be more worried how it will effect your tune, the reduction in back pressure would require fuel be added which means your engine is leaning out - not good

[cobrAA]

I'd be more worried how it will effect your tune, the reduction in back pressure would require fuel be added which means your engine is leaning out - not good

I will be doing a new tune after doing this mod ( if i decide to do it) so i imagine the tuner will fix this issue.

[Piggaz]

What about the map when it's shut or will you have two maps done, switching over when you open/close the flap?

[Count Grantleyish]

Both! but even if your car is quiet.. a big pipe will still draw useless attention.

That's pretty retarded.

Do they measure noise whilst pulling you over or just assume it is (like here in Victoria).

Get quiet 3.5" made up and paint it black - problem solved.

[cobrAA]

That's pretty retarded.

Do they measure noise whilst pulling you over or just assume it is (like here in Victoria).

Get quiet 3.5" made up and paint it black - problem solved.

exactly, no tools at all.. just assuming its louder than stock because the muffler is not the same. Thats why I went ahead with a Varex oval ( that I will paint black, was already in my plan! ) 3 inch in and out.

[cobrAA]

What about the map when it's shut or will you have two maps done, switching over when you open/close the flap?

glad I asked the question, I'm now realising thing I didn't before! I will have to talk to my tuner and to Haltech support and see if its possible to have 2 maps switched, maybe.

[cobrAA]

Just a follow up, Since I own a Haltech ECU, this was their response:

3) With the WB1 connected and configured correctly, you can the 'O2 Control' function to trim your fuel map in real time. This means if you open your exhaust cut-out, and the engine starts to run slightly lean, the WB1 can add more fuel automatically.