Thoughts on 2" FMIC piping

[xcelr8n]

Hey guys, Have a FMIC in my garage waiting for me to install, only problemo is it has like 2" piping, more accurately I'd say 2 1/8" but regardless, there smaller then the typical 2.5" piping most people use..
I know it will be fine for a 14b that i currently have, but will it struggle with a evo316g, thats the next step.
core size is 27x8x2.5, I plan on running 16psi daily and ~20ish at the track, will determine exact number judging by timing and knock..
thanks in advance

 

[denny]

Hey guys, Have a FMIC in my garage waiting for me to install, only problemo is it has like 2" piping, more accurately I'd say 2 1/8" but regardless, there smaller then the typical 2.5" piping most people use..
I know it will be fine for a 14b that i currently have, but will it struggle with a evo316g, thats the next step.
core size is 27x8x2.5, I plan on running 16psi daily and ~20ish at the track, will determine exact number judging by timing and knock..
thanks in advance

Bro am curently running 2" and there is little to no lag .....air just goes to the engine real quick....with smaller piping... the bigger the pipe the more lag.....even with a evo3 turbo...

 

[Staytuned]

It will work for now. Your volume of air will be down but velocity will be high. You will want at least 2 1/4 in the near future.

 

[Turbocharged]

Bro am curently running 2" and there is little to no lag .....air just goes to the engine real quick....with smaller piping... the bigger the pipe the more lag.....even with a evo3 turbo...

The spool time on my 50 trim went down when I upgraded from stock piping diameter to 2.5"... Throttle response also increased...

 

[Turbo Shogun]

You need to match your piping to the amount of air you're flowing. If you want to stay under the 300 HP mark (264 or thereabouts, BHP), or if you're running the stock 14B, I think 2" piping will be your best bet if you want minimal lag. But if you upgrade to a larger turbo that flows more air, eventually, the 2" ID piping will begin to hurt performance. You may get better response, but the amount of power you'll be making will conversely suffer. Upgrading to a bigger pipe set proportional to the capabilities of your turbo could net you more power with a little or no increase in lag. I do think 2.5" piping is a little overkill, unless you're running something that can actually use all that room ... I'm in the process of installing an MA70 Supra intercooler on my car with 2" In/Outlets. It'll be interesting to see how the engine responds to it.

 

[xcelr8n]

So you think I should just go wth 2.25", will that be good enough for the evo3?
ps. shogun, youre car is exactly what I want mine to look like, nice ride!

 

[Turbocharged]

If you really want bigger pipes use 2" from the turbo to the intercooler inlet, then use a 2"-2.5" silicon reducer on the IC outlet and use 2.5" pipes from the outlet to the throttle body elbow. Makes sense to me... a lot of people do this.

 

[UPGRADED2G]

Im using 2.5 piping (that came with my FMIC kit) with my T25...I had a 2.25 before and I don't notice the difference....and 200 rpm of difference is not really a difference to me in spool up time! Eventually I'll be getting a 50 trim, so I should be ok. Once again, it all depends on your goals.

However, the piping from my T25 goes from 2" to 2.25 to 2.5 on the turbo side and a full 2.5 on the TB side.

 

[Turbo Shogun]

For an Evo III 16G, I think 2.25" from the I/C to the TB will be good enough. I don't know how big the outlet is on the Evo III, but I would match the diameter of the outlet to the piping that you want going to the I/C.

It would seem like you're not going to be drag racing ... I'm an autocrosser myself. The less area your turbo has to pressurize within the piping, the better (to a certain extent, of course) for transient response and spool-up. Case in point ... Check the piping on serious rally cars. You'll be surprised.

And thanks for the compliment, xceler8n.

 

[xcelr8n]

I'm actually a lil more into drag racing then anything else, I believe I will go 2" from turbo to intercooler, and 2.5" from intercooler to tb, that way i dont have to worry about having the upper ic pipe mate to my 3" GM MAF.
Thanks for the advice guys.

 

[byondevl]

Funny, the dave brode IC pipe is 2.25, there are guys in 10's on it.

 

[RSTwnnabe]

i am running a 16 G, and all supporting mods. i just bought an intecooler( 24x12x3) so do you guysthinkg 2.5 will be too big? or should i go 2.25....i want good response and no lag..but i also want the pipes to be big enough....waht size will be the best? thanks a bunch guys .
dave