NZ_87_TURBO

hi

my t2 is going bloody great, its got a 3" TID and FCD and a 3" exhaust all the way thru, no cat and splits into 2.5" mufflers, no before i got the 3" pipe put in it was running 8-9psi in 1,2,3rd and 11-12 in 4th and 5th, nowwwww its runnign 10-11 in 1st and 2nd and 14 in 3rd 4th and 5th,

is there anyway i can limit the boost that dosnt invole me pulling the turbo off of spending $500 on a boost controller?

sorry for being a tin bum i just dnt wana reck my eng

RotaryEvolution

iTrader: (30)

no



your only alternative is putting the stock airbox and exhaust back on.

boost controllers only raise boost, not lower it.

ilike2eatricers

either pull the turbo and port the wg or restrict your intake and/or exhaust. no other way around it. a boost controller will not lower boost beyond what the wg can handle. it can only raise boost.

rx7idgit

I'm pretty sure your gonna here alot of, "Port the wastegate, it's not that hard or expensive." But I'de be kinda interested in this too if there are any alternatives or if a boost controller does effectivaly control boost. But your gonna want to do something or to your motor.

RotaryEvolution

iTrader: (30)

there is no alternatives to lowering boost than the ones mentioned.

well you could stuff a potatoe(grin) in the tailpipe i guess but eventually you would have french fries popping out the exhaust.

RETed

Stop pressing on the gas so hard...


-Ted

cardzrule

use teh pedal on teh right dood!

cardzrule

doh I got scooped!

neway what he said

KeloidJonesJr.

iTrader: (8)

Why would you want to limit boost?

BklynRX7

Shouldnt you be hitting fuel cut at 8.5lbs?

NZConvertible

Only by restricting airflow (intake or exhaust), which will also reduce performance. Porting the wastegate is cheap and will have less impact on performance. For the same boost you'll get more power with a ported wastegate than with restricted intake/exhaust.

And as mentioned a boost controller won't help at all.

You're joking right? I fear for your engine...

ilike2eatricers

Not enough fuel, stock ecu, etc. etc.

he says he has a FCD in the first sentence

BklynRX7

Then why the hell si he bitching about too much boost? He asked for it!!!

unW7WZ

He said he had an FCD....

Edit: man there are a lot of ppl on tonight....in the time I read the posts someone had already posted!!

ilike2eatricers

uhhh some people feel that hitting fuel cut all the time isnt good thing... then again overboost is not either but you can control overboost with throttle control

unW7WZ

doesnt fuel cut cause a lean situation by cutting fuel? That can't be good either

BklynRX7

I alway thought fuel cut caused no fuel, a lean condition would mean a AFR that had too little fuel per part of air like 7:1 or 8:1 not 0:1.

unW7WZ

Nah, fuel cut only cuts the secondaries, not primaries..

NZConvertible

If you want more that 8.6psi you fit a FCD, but 14psi is obviously too much. That really shouldn't need to be explained...

Fuel cut does not cause a lean condition. To have a lean condition you have to have combustion. No fuel = no combustion.

Carzy Driver

Is there any possible bad outcomes when it comes to choking the air supply to the turbo besides loss of horsepower and boost?

NZConvertible

All you're doing is replacing some of the restriction that was present in stock form, so no. You don't "choke" it, you just restrict it a bit.

Carzy Driver

what about with "aftermarket" turbo applications?

BklynRX7

It didnt need to be explained to me, some things should be explained to the poster. Lets just use the theory of supporting mods for example. "oh I upped the boost and now im scared I may run lean" You should have thought about fuel and the size of your wastegate before you went and did that ****.

Alex Rodriguez

iTrader: (137)

**** i learned something new i thought a boost controller was used for adjusting the boost down, so what should i do so wont blow my motor

i have these mods: fmic w/ 3in. piping, cold air intake, accel wires, full exhaust from the downpipe out, and stage 3 clutch

ilike2eatricers

ditch the accel wires (stock NGKs), get a FCD and if you want get a boost controller to raise to boost to where you want (at a safe level of course according to what fuel mods you have)