throttle body mod

jpstoner · 01-25-2009, 06:13 PM

i've been doing some looking around and I was wondering. when you bore out the throttle body (please correct me if i'm using the wrong term; i mean: http://www.qksltwo.com/tb.html ) i've read you are supposed to get a slight hp boost. My question is will it increase, decrease, or do nothing to your gas milage?

I purchased a $40 CAI off ebay and i think it gave me a small boost but dropped my milage by about 2 mpg. So will this also drop my milage or what can I expect?

Thanks in advance!

OldNuc · 01-25-2009, 06:50 PM

You have to feed all of those new ponies, there is no free lunch unless you increase the efficiency of the combustion process.

WingsOfSaturn · 01-25-2009, 07:41 PM

Quote:

Originally Posted by OldNuc

You have to feed all of those new ponies, there is no free lunch unless you increase the efficiency of the combustion process.

Does this mean my $25 Speed Chip off of ebay does not give me free power?

Just kidding!!!!

jpstoner · 01-26-2009, 01:55 AM

makes sense. thanks

black98dohc · 01-26-2009, 02:06 AM

Do the TB mod if you want, and don't worry about 1mpg?? Just go for it, will increase your reaction and maybe 1hp

SC2Sick · 01-26-2009, 08:18 PM

skip the porting and get a geo storm throttle body

fetchitfido · 01-26-2009, 08:23 PM

Yeah, the Storms SOHC TB is larger then ours can be bored to and the DOHC TB is larger still.

Fox Slaughter · 01-26-2009, 10:55 PM

In all reality unless you are boosting or trying to make some good power, TB isn't going to do much for you. Except increase throttle response.

black98dohc · 01-27-2009, 01:49 AM

So any metro TB will be a directly swap? Same hoses, same screws and all that? I saw a geo metro when i got the 92 headers on the junkyard. Here are the pics

I'm doing the bore at home, then SRI

technical_dir · 01-27-2009, 02:14 AM

thkx for the link very cool

PurdueGuy · 01-27-2009, 01:04 PM

Quote:

Originally Posted by black98dohc

So any metro TB will be a directly swap? Same hoses, same screws and all that? I saw a geo metro when i got the 92 headers on the junkyard. Here are the pics

I'm doing the bore at home, then SRI

Where did anyone say Geo Metro? Storm =/= Metro.

The storm tb will bolt up, the TPS & IAC either plug in or splice in, and the throttle cable requires a custom bracket.

black98dohc · 01-27-2009, 01:26 PM

Storm then, sorry

Fox Slaughter · 01-27-2009, 05:06 PM

As PurdueGuy said, you will need a custom throttle cable bracket. As the Storm I believe is back farther then out stock location. Or vice versa can't remember exactly.

alordofchaos · 01-27-2009, 05:38 PM

Quote:

Originally Posted by PurdueGuy

Where did anyone say Geo Metro? Storm =/= Metro.

LOL, I was wondering about what kind of performance parts y'all were wanting to pull from a 3 cylinder 1.3 liter engine

I test-drove a Storm when they first came out, and came this close to pulling the trigger on buying one. Kinda glad I didn't, seeing how they seem to have held up over the years.

black98dohc · 01-27-2009, 05:48 PM

I'll check the sizes and see what i can do, otherwise i will open up my own, but do it throught the whole TB, not like others do, bore till the butterfly or door, thats not a mod. You need to fully open the ID of the TB to let it better flow

Fox Slaughter · 01-27-2009, 08:24 PM

People bore out both sides of the TB to the butterfly plate. You can't bore out around the TB plate because obviously the plate wont fit snug.

PurdueGuy · 01-27-2009, 09:15 PM

Quote:

Originally Posted by black98dohc

I'll check the sizes and see what i can do, otherwise i will open up my own, but do it throught the whole TB, not like others do, bore till the butterfly or door, thats not a mod. You need to fully open the ID of the TB to let it better flow

If you remove material around the throttle plate, your car will never idle right again unless you replace it with a larger throttle plate. It also doesn't help to port the throttlebody out on the backside any more than to match the intake manifold.

black98dohc · 01-28-2009, 11:52 AM

Of course i will not leave the stock plate if i'm doing the full ID bore. And i'm also matching with the intake manifold size. I've done this to both of my friend's civics and they worked good.

RBrown20 · 01-28-2009, 01:07 PM

Quote:

Originally Posted by fetchitfido

Yeah, the Storms SOHC TB is larger then ours can be bored to and the DOHC TB is larger still.

Are either or both of those both of those direct fit? I have an sohc, and any lil bit will help.

PurdueGuy · 01-28-2009, 01:18 PM

Quote:

Originally Posted by RBrown20

Are either or both of those both of those direct fit? I have an sohc, and any lil bit will help.

Quote:

Originally Posted by PurdueGuy

The storm tb will bolt up, the TPS & IAC either plug in or splice in, and the throttle cable requires a custom bracket.

That is for the dohc, not sure about the sohc, but you would still need the custom bracket for the throttle cable.

01-25-2009, 06:13 PM	#1
jpstoner Member Join Date: Oct 2008 Location: Murfreesboro/Knoxville (TN) Posts: 61 1997 SC2	throttle body mod i've been doing some looking around and I was wondering. when you bore out the throttle body (please correct me if i'm using the wrong term; i mean: http://www.qksltwo.com/tb.html ) i've read you are supposed to get a slight hp boost. My question is will it increase, decrease, or do nothing to your gas milage? I purchased a $40 CAI off ebay and i think it gave me a small boost but dropped my milage by about 2 mpg. So will this also drop my milage or what can I expect? Thanks in advance!

01-25-2009, 06:50 PM	#2
OldNuc Super Member Join Date: Apr 2008 Location: Far Southwestern Iowa Posts: 66,694 OldNuc's Photos 1998 SC2	Re: throttle body mod You have to feed all of those new ponies, there is no free lunch unless you increase the efficiency of the combustion process.

01-26-2009, 01:55 AM	#4
jpstoner Member Join Date: Oct 2008 Location: Murfreesboro/Knoxville (TN) Posts: 61 1997 SC2	Re: throttle body mod makes sense. thanks

01-26-2009, 02:06 AM	#5
black98dohc Advanced Member Join Date: May 2008 Posts: 514	Re: throttle body mod Do the TB mod if you want, and don't worry about 1mpg?? Just go for it, will increase your reaction and maybe 1hp ... 1998 SC2 - 92' header, Cat-back, CAI, Wires and plugs, Intrax lowering kit, Strut bar, LUK clutch, Just polished, Short shifter & Dojo™ knob Coming up: Meet up on the 25th.

01-26-2009, 08:18 PM	#6
SC2Sick Advanced Member Join Date: Mar 2005 Posts: 740 1997 SC2 1995 SW2	Re: throttle body mod skip the porting and get a geo storm throttle body ... sixthsphere.com owner 2002 Saturn SC2 - RHD

01-26-2009, 08:23 PM	#7
fetchitfido Super Member Join Date: May 2006 Posts: 15,131 fetchitfido's Photos 2001 SC2	Re: throttle body mod Yeah, the Storms SOHC TB is larger then ours can be bored to and the DOHC TB is larger still. ... The proper way to fix a S-Series automatic is to replace it with a manual

01-26-2009, 10:55 PM	#8
Fox Slaughter Senior Member Join Date: Dec 2008 Location: North of Detroit Posts: 1,697 Fox Slaughter's Photos 1998 SC2 1996 SL2	Re: throttle body mod In all reality unless you are boosting or trying to make some good power, TB isn't going to do much for you. Except increase throttle response.

01-27-2009, 02:14 AM	#10
technical_dir Junior Member Join Date: Jan 2009 Location: Houston Posts: 15 2000 SC1	Re: throttle body mod thkx for the link very cool

01-27-2009, 01:26 PM	#12
black98dohc Advanced Member Join Date: May 2008 Posts: 514	Re: throttle body mod Storm then, sorry ... 1998 SC2 - 92' header, Cat-back, CAI, Wires and plugs, Intrax lowering kit, Strut bar, LUK clutch, Just polished, Short shifter & Dojo™ knob Coming up: Meet up on the 25th.

01-27-2009, 05:06 PM	#13
Fox Slaughter Senior Member Join Date: Dec 2008 Location: North of Detroit Posts: 1,697 Fox Slaughter's Photos 1998 SC2 1996 SL2	Re: throttle body mod As PurdueGuy said, you will need a custom throttle cable bracket. As the Storm I believe is back farther then out stock location. Or vice versa can't remember exactly.

01-27-2009, 05:48 PM	#15
black98dohc Advanced Member Join Date: May 2008 Posts: 514	Re: throttle body mod I'll check the sizes and see what i can do, otherwise i will open up my own, but do it throught the whole TB, not like others do, bore till the butterfly or door, thats not a mod. You need to fully open the ID of the TB to let it better flow ... 1998 SC2 - 92' header, Cat-back, CAI, Wires and plugs, Intrax lowering kit, Strut bar, LUK clutch, Just polished, Short shifter & Dojo™ knob Coming up: Meet up on the 25th.

01-27-2009, 08:24 PM	#16
Fox Slaughter Senior Member Join Date: Dec 2008 Location: North of Detroit Posts: 1,697 Fox Slaughter's Photos 1998 SC2 1996 SL2	Re: throttle body mod People bore out both sides of the TB to the butterfly plate. You can't bore out around the TB plate because obviously the plate wont fit snug.

01-28-2009, 11:52 AM	#18
black98dohc Advanced Member Join Date: May 2008 Posts: 514	Re: throttle body mod Of course i will not leave the stock plate if i'm doing the full ID bore. And i'm also matching with the intake manifold size. I've done this to both of my friend's civics and they worked good. ... 1998 SC2 - 92' header, Cat-back, CAI, Wires and plugs, Intrax lowering kit, Strut bar, LUK clutch, Just polished, Short shifter & Dojo™ knob Coming up: Meet up on the 25th.

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