guys i got a fmic on my sti atm and i want to go back to a top mount. not fussed but would prefer a bigger than stock top mount.

my question is if my car has a unichi and is tuned to 180kws what would the affects of replacing fmic with a standard sti or aftermarket topmount???

any input?

btw it is a 99 v5 sti

Lose a bit of overall power .. gain some response? Get a waterspray setup working too.

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[SIGPIC][/SIGPIC]
Should have bought an STI

iv just done this on my 03. I dont think i'd ever go back to be honest, the difference in drivability is amazing.

There is actually not alot of difference between a 02+ STi top mount than a huge aftermarket. The performance benefits are next to nothing, dont trust all the hype - as iv yet to see a proven dyno result or a proper test. water spray is a good idea.
You ecu would require a retune to possibly pull back some timing, but you could run without.

lose some top end, gain some low

My son recently did this to his 2 door STI & it's got an FP green & Autronics, I'm driving it atm & it still runs quite well without a tune.
In all honesty I'd have a later GD STI top mount modded to suit, I've got a GD WRX one on my V3 STI it's much bigger than the one you have & the STI is even bigger, you'll need a clutch reservoir($50 at JWS) brackets (I think I've got a spare set) & possibly some welding mods at the BOV.

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Beaten up old 98 Gen 2 Liberty, 13.0, stock V3 STI running gear.
07 Transit motor home
69 VF & 70 VG Valiants needing full restoration
Yamaha Zooma 50cc rocket hopefully going with the Transit.

Just out of curiosity ( Mostly mine ) Race Torque swapped the STi top mount in the Pig for a larger aftermarket one ( can't remember the brand but one of the better ones ).

It reaped a whole..... Now Wait for it
>
>
>
1KW more.

Needless to say we stuck with the stock one.

Just go the STi one and be done with it.

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Stoner & Webber 2011 World Champions

spec c top mounts will be a little better then a stock sti top mount.

with water spray, they would be ideal for a daily 300hp.

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Long live the WRC

I had a cheap chinese spec big top mount--swapped for a process west and added the sti splitter - picked up 10hp a.t.h. - certainly the splitter would have help gain some - if not all of that powa!

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STi TMIC, Splitter to ensure no air gets past the TMIC, and even distribution, Big Scoop, and waterspray.

Best TMIC setup possible.

Would be interesting to see a comparison result between and STi TMIC and PW TMIC.

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[SIGPIC][/SIGPIC]
Should have bought an STI

I would say the PW is no better than the GD STi TMIC. Process West were pretty quick to release increases over the WRX TMIC after development but nearly a year later still no STi TMIC vs PW TMIC results, I wonder why?

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Range Rover Evoque Si4 Dynamic