si-thee

would i lose or gain anything by taking my fmic off and putting a decent tmic on car?

car is running at 420bhp i was lead to believe that over 400bhp you need a fmic??

cheers

360ste

iTrader: (1)

Think the flow limits from a TMIC are around 400 bhp. Look for posts about going from TMIC to FMIC.

joz8968

iTrader: (13)

It would be a backward step as far as future modding is concerned. Also, the FMIC is safer for the motor - ACTs are way down, compared to a TMIC.

Don't swap it (seeing as it's already in place).

prodriverules

iTrader: (52)

As a very well known engine builder told me when asking 'what change the interwarmer,i should think so' lol
Stick with the fmic mate

si-thee

cheers

joz8968

iTrader: (13)

Hey, PDR, got the Z32 back - cheers.

BTW, my car's now at API having those mods done... inc. a FMIC (just to keep my comment on topic! lol)

pooeater

youl see your spool go though the roof, andy forrest uses a deep core on hes track car pushing 420 bhp

prodriverules

iTrader: (52)

How do John how's you,glad it got to you alright mate.
Looking forward to seeing how it turns out you'll have to let me know what the out come is and of course having the FMIC is a good idea

The Pink Ninja

iTrader: (23)

I know of a couple of cars that are running 420-430bhp on the standard sti top mount, v7 jdm sti & 07 spec c, but why change as there isn`t any really massive gain to be had by swapping apart from spooling up a little bit quicker if your lucky depending on your set up, Personally i`d leave it as it is if it were mine.

harvey

iTrader: (48)

Do you have any evidence of this this or indeed any first hand experience???

pooeater

shorter pipes,smaller intercooler less time to fill with air, just mine feels alittle laggy on the vf35 with a fmic if some one got a printout (vf35&top mount) il postmine and can take alook , what your experience harvey?

Tidgy

lag is so little comparing a front/top mount you'll never feel any difference at all. Feelable lag issues are setup issue, not front mount issues.

harvey

iTrader: (48)

My experience and that of many others is that on an efficient FMIC such as Hybrid and proper mapping there is no appreciable increase in lag and the power increase, just from a TMIC to FMIC swap and mapping is very noticable on the **** dyno and supported by back to back testing.
This lag on a front mount is very much overdone. Sometimes it is people without direct back to back experience regurgitating the opinion of others. The cause of poor response, if it exists, usually lies elsewhere starting with a crap kit, some other change including DV and tubular headers or lack of mapping.
Pooeater. Are you suffering lag since changing to an FMIC?
What else was changed at the same time?

pooeater

fmic on the car wen i got her, car was on the dyno sunday showing full boost around 4500rpm alittle late for a vf35 i thought, suspecting the fmic and to be the cause of this

Butty

iTrader: (2)

Yikes - that's 27 psi on a poor little Vf35

I see from elsewhere that you quoted:

vf35/1.8bar
gems ecu
fmic
inducion k&n
full H&S exhaust
gt spec headers/uppipe
740cc inj
forge actuator
forged 2.0l built by ZEN
mapped at the racing line
made 350bhp/390lbft


Its not producing that anymore so something has changed?
Just what is going on with that run 2 boost curve?

Time to point the finger away from the FMIC causing your woes.

pooeater

nothing changed just diff dynos, now its 369/341? run 2 is abit funny with the boost dv i think, be interesting to put a tmic on and see what happens

harvey

iTrader: (48)

Without actually getting my head under your bonnet I do not know what your problem is but it rather sounds like you are blaming your front mount for some change that has taken place and therefore I would conclude at this moment in time that you are laying your hat on the front mount without thinking it through logically.
If you want to come to Darlington by appointment we can probably identify the issues and to do that would cost nothing. Fixing the issues will cost something but without knowing what the issues are I cannot tell you more.

harvey

iTrader: (48)

PS: Full boost on a VF35 at 4500 rpm is 700-1000 rpm more than it should be.
There is clearly something wrong and you need someone you can trust to get to the bottom of this in case it causes permanent damage.

prodriverules

iTrader: (52)

What uppipe are you using mate as this can cause poor spool if to big.

petedotuk

After looking at your dyno sheets I'd be getting it checked ASAP. Throw up the AFR from the run, its on the same page as the boost plot.

pooeater

si-thee

the reason i asked is due to lag im getting, but reading what harvey has put i think i need to step back and think more logical ???

Tidgy

wtf, get it looked at asap

just to compare, mine on a vf34, compare the fueling between mine and yours



and power graph,

prodriverules

iTrader: (52)

Nice graph there tidgy mate from vf 34,is that classic or newage?

Tidgy

cheers, its a classic uk turbo with some other tweeks as well lol

New_scooby_04

iTrader: (4)

What he said. Having been from a TMIC to a quality FMIC (The Hybrid) with a VF35 (and supporting mods) I can tell you that the difference between the two in terms of boost threshold is imperceptible and the lag (i..e delay in response to throttle pedal being pressed) is not noticeably different as far as I could work out too! What is noticably different is the extra power and torque that the FMIC allows the mapper to liberate!

There is something wrong with your set up mate.

Ns04