I think that you will get a lil MORE lag with a HUGE front mount....
There is 5 miles of piping that needs to stay compressed from the turbo to the throttle body...hmmm hmmm

Jim

 

FMIC=more lag, the compressed air has to travel longer distance.. longer distance=more lag

 

What he said^^^^

 

I find it hard to believe that air traveling at over 250mph is gonna find a few feet of piping all that troubling.
I would venture a guess that maybe some better, cleaner grounds might help the Electronic Throttle respond better and faster. Just a thought though. No idea.

 

More piping is more piping, lag is lag. By the way I went stage 1 yesterday and I definately noticed less lag and much better throttle response. Can't wait for stage 2...if I could only find a place with a f*ckin downpipe in stock.

 

I changed out the tiny 06 WRX TR intercooler with an STi intercooler. It helped when I put on the downpipe and ran stage 2. I cant wait until the Helix V3 uppipe finally arrives so I can add that and get a tune.

 

Did the sti i/c really help that much on stock turbo? And yea all the new helix stuff is coming to gruppe-s in mid-late october huh

 

It is a little smoother and boosts a little higher with the STi intercooler installed. Not a huge difference, but slightly noticable.

 

Not to mention the new bling under the hood

 

It actually isn't distance, it is volume. All the piping has to be filled to the correct PSI to begin forcing air into the turbo, and the more air there is, the more air there is to pressurize. That being said, the lag a FMIC causes has more to do with the turbo and tune than it does with the volume; if the turbo takes a long time to spin up, it will take even longer, but a fast-starting turbo won't see as much of a penalty. The stock turbo does spool pretty quickly.

Turbo lag is most often solved by just training the driver, not modding the car. A turbo engine doesn't make power below 2500 RPM, period; you just have to train yourself to keep on the gas and shift later than you normally would with a N/A engine.

Upgrading the intercooler is a great idea, even on the stock turbo. I believed for a long time that a larger TMIC would be a waste of money, but now that I have one I am amazed at how badly heatsoak and the small TMIC was limiting the performance of the car. With the stock TMIC I noticed that the car was much faster and more powerful the first ten minutes I drove it (especially after it sat overnight in the cold) and how poorly it would perform if I drove it while the engine was thoroughly heated (say, after a 30-minute drive) or it had sat in the Arizona sun for a while. Heatsoak was costing me at least 20-30 hp, totally negating the effect of the intercooler. Turbo magazine did a test recently where the stock STI intercooler was measured at the inlet and outlet tanks while they did dyno runs. By the third dyno run, the air was entering and exiting the TMIC at 245 degrees, NO lowering of temperature at all. This was with three huge fans blowing on the car, simulating highway speed!

 

if you dont want lag, get a car with a supercharger... my STi has full boost at 2800-3100 rpms. how much sooner do you want it?




somewhere online always has in stock...