blind

yea if i were to put 3" downpipes and midpipes on a 88 TII FC would i have put in parts to regualte the gas and boost and would the 2 mufflers be better or the single.

1FastT2

iTrader: (1)

Im not quite understanding what you mean by "put in parts". As for the exhaust, a single straight pipe with a single muffler is known to make more power than a dual exhaust setup.

blind

well i mean by put in parts meaning instelling a feul cut defencer and a boost contorler to proctect my engine becuase of the better flow of air

Rotorific

iTrader: (1)

you just said the two things you need

blind

LOL so i was right i DO need thoes things are thay hard to install and where could i find them at an affordable price on the internet

Evil Aviator

Those items do not protect your engine. In fact, the fuel cut defenser bypasses the stock Mazda protection device. A boost controller can only raise boost, not lower it. If you install these devices, then you should upgrade the fuel system and port the wastegate as your actual protection mods. More on mods here:
http://fc3s-pro.com/sitemap.html

Some places to buy an FCD or boost controller:
http://66.216.67.51/subcat.asp?0=208
http://www.rx7.com/
http://www.mazdatrix.com/
http://www.racingbeat.com/
http://www.hksusa.com/

blind

but i mean without the feul cut defencer the new exhaust will create more boost and there woant be enogh gas and that could be harmful so in the end u are procting your engine thats what i mean

Thanks for the Fo

StinkyFatPig

Are you kidding?? That doesnt seem right.. more room for exhost to move so you would think more power?
why is this.. I ask cause my car has duals.

TheBigOne

Less weight. and any way its single from the manifold any way. unless its after market dual.

gsracer

uh oh...not another single vs dual thread

StinkyFatPig

oh is this one of those things that no one really knows for sure? I am new to the board so i havent seen any before

TheBigOne

Hopefully not!

But it just makes sense.. to me anyway.

If its dual, meaning dual from the manifold, its possible... more power but theres more weight from the plumbing.

I dunno. fuggit.

TheBigOne

I think if were talking mild mods. But keeping the stock manifold.... then yeah single all the way.

i'm the one to talk though. I just had a straight pipe-custom exaust put in. and its still dual. no Y pipe though.

dr0x

I havent seen a true dual for a turbo ii Id rather have a y pipe though. I like how it looks more than a single.

As to answer your questions, a fcd (fuel cut defender) does not supply more fuel it just fools the ecu once it gets to like 7500rpm so it doesnt cut the fuel.

As for a boost controller it doesnt lower boost, it only raises it.

Port your wastegate, and maybe get a higher flow fuel pump (either a fd or walbro 255, both pumps will be good for what you need), the walbro a little better since it flows more than the stock fd pumps and you can use it in the future when you get more mods done.

You dont need much more if you are just doing exhaust work. If you do the TID mod and a few more things Id suggest getting a s-afc and getting some dyno time.

Evil Aviator

When the stock computer senses an overboost situation, it cuts the fuel to the rear rotor to keep the engine from being damaged. If you bypass this function with a fuel cut defenser, then the engine will continue to operate past the safe boost level, which will lead to a dangerous lean condition with the stock fuel system, and/or boost creep. I guess what is confusing to someone new to this issue is the fact that the factory ECU fuel cut is much less damaging than running lean with a fuel cut defenser. This is why you should upgrade the fuel delivery system and port the wategate prior to installing the fuel cut defenser. See the warning here:
http://www.iptmotorsports.com/hksfuelcutde.html

BTW, your stock boost gauge will no longer work correctly with the fuel cut defenser, so you will need to get an aftermarket boost gauge if you install an FCD.

Rotorific

iTrader: (1)

honestly ive never seen an accurate stock boost gauge...