Celica Forums General Discussion General Just Removed Butterfly

yea i just removed my butterfly i'm at work so i just took 10 min off and did it engine sounds a lot deeper now and a lil faster it's the best free mod ever YEA!

RECOMMENeD EVERY1 TO DO IT

just go to the intalls page and the directions are easy as hell took me 10 min to do

and yes i am a n00b at this shit so i'm glad :smile:

that's rite~! that's ur first step

there's still a lota things awaiting you! Intake next!

now a Intake and butterfly is a day and night difference

Be careful when doing this, because you lose vacuum pressure at idle, and if you have ABS, when you brake in a panic situation, it will cause your car to stall out because it won't be able to maintain idle speed and power assist the ABS with the lessened vacuum pressure

^^^ meh. if you worry about that sort of trivial thing, next you'll be wearing a seatbelt too.

I worry about it, because having your car stall out during a panic stop means you lose steering AND braking.

Doesn't sound like the kinda thing I'd want to have happen to me in the snow, or in the rain when I need to control the car in a skid

I remember that you yanked your butterfly a while back. Did you put it back in?

yep, the second I stalled the car out from doing a really hard stop from 90 into a 15 mph blind curve.

Almost crashed the car, put the butterfly back in once I got home.

i have a auto will i still stall ??

damn you guys got me scared now

this mod is dum ...get an Intake.

al kidding aside i have dynos that show the gains as minimal...we're talkin like .4-.7whp...at lift. i doubt a gt gets any at all. that butterfly is there for a reason.

ack.

note to self: be careful with DIY mods

it's only a big deal when you brake hard, and put the clutch in to change gears. the car drops to idle speed, and since the butterfly valve would then engage, and create more vacuum pressure, it can't maintain that level of idle, and it stalls

if you have an auto, don't worry about it because you are never going to change gears with a clutch

haha, so its a better DIY for auto...in terms of stalling out.

well...dont you step on clutch when you at a panic stop?

if that so, how can ur car be stalling? or is it possible to stall with the clutch in at taht situation also?

any Performance gain???

here...6-sp gts. you can bet a GT 5sp or gts auto will not get the same gains.

Did You plug the vacuum line with a shunt? That would have eliminated the vacuum leak.

This mod is masturbation, leave it at a drop in filter (K&N or TRD) or get a aftermarket Intake. Not worth killing yourself just to say you have a mod.

The GTS Auto & the GTS 6-sp would have EXACTLY the same gain because they are the same engine. Gearing does not determine horsepower, the motor does. You are measuring a dyno in a single gear, not the quarter mile.

Its a great n00b mod, for those really getting into car modifications. I don't feel like buying a Performance filter because i'll probably be getting a CAI next. For those who don't have exhuast, Intake, or headers and want a more deeper sound than stock, this is still the ticket.

ACTUALLY...

The drivetrain loss is different. People have posted auto GTS dyno's before, and they are substantially less than 6-speeds. (my celi is auto, btw).

^^ how do you dyno an auto?

anyway, I agree with Sancho. I pulled mine out for the sound, and if you've never done mods on a car before but want to start, it's a good way to get your feet wet.

Same way they dyno the 900 HP auto Supras

ACTUALLY...

The drivetrain loss is different. People have posted auto GTS dyno's before, and they are substantially less than 6-speeds. (my celi is auto, btw). [/quote]

Ya, but the drivetrain loss is a constant. The gain would not change.

...but isn't drivetrain loss expressed as a percentage of total HP, not a constant number?

Sorry, could be wrong on this one...

I don't know. Okay 180HP flywheel less 20HP = 160HP ground
Is it: 1) Turbo to 240HP flywheel less 30HP = 210HP ground
Or: 2) Turbo to 240HP flywheel less 20HP = 220HP ground

Either way, I guess its symantecs considering we are talking about a 0.7HP gain.

Yeah, I think it's a ratio of the total HP produced... so your net HP loss in the drive train increases with Performance mods.

But you are right... we're arguing about .1 HP difference (or less) either way. I just like being right.

I wonder how many dynos it would take to prove the 0.1HP?

I'm pretty sure that's well within the margin of error.

I guess you could dyno a 6-speed with the mod 10 times and average out the gain... then an auto 10 times and average it out. Still, I don't think anyone here has that much free time on their hands.

This is a stupid mod.

If you feel any difference in power, then please buy a $50 chip off of me to boost your flywheel horsepower by 50 BHP!

The dyno for this mod says it gives a gain of 1hp. Whoopie! You can't even feel 1hp. The same effect can be felt when you are low on gas, or you take your bookbag out of the trunk of your car.

Also, let it be known that a gain of 1hp is not even really a gain most of the time because the margain of error on a dynometer can ofter be a few horsepower.

make sure your clear on this you loose abs and power steering not steering all togeather

if i can wrestle a 5k pound ramcharger with 33's on it to a controled stop with no power the celica should be a cake walk

CID, plugging the tube isn't what goes wrong.

The engine runs out of air, because the valve closes at idle, making the air come in at a higher velocity.

i got the trd Performance Intake filter, but when i was doing the install i decided to take out the butterfly too... shouldnt the guys who have taken it out with there CAI's have problems too?? with braking??

Taking out the butterfly is more of a sound thing than a Performance thing...

I took my butterfly out (about 1-2 weeks before my CAI went in ), and I didn't have any trouble at all. But I've yet to be in a situation where my ABS needed to kick on (in the Celi, that is!).

too much thought went into this thread...

i'm in the same boat as you, with a CAI they ditch the whole airbox, but would you still have this problem?