Throttle Body Spacers

[JennaBear]

This question comes up quite often in my PM box and emails, so I figured I would throw out my answers here.

Throttle body spacers (TBS) came about back in the time when TBI engines were the craze. The TBS did indeed help the TBIs as they helped to improve atomization of the fuel by changing the flow of air as the fuel was sprayed before the throttle body. The gains are minimal but are still there.

The TBS are a waste on the newer engines as the fuel is sprayed after the throttle body. The air is already "spun up" as it goes through the throttle body, so the TBS basically duplicates the effort. The TBS won't hurt your engine however, that being said, some folks wind up having problems with the spacer as it is one more thing to wiggle lose and cause leaks.

 

[tybardy]

i would like to add to this....

I believe you can find a TB spacer for about $40 if you shop hard for one.

for a mear $20 (HALF THE PRICE) i will add the same amount of power to your truck. here is how it works, you send me $20, i will then send you a picture of my truck you can put in your dashboard, not only does this thing add the same HP as the TB Spacer, but it is certain to up the coolness factor of your truck but a staggering 10%

 

[SFBerto415]

Lmao

 

[TMoNeE]

But they make a cool whistle that sorta makes it sound like you have a blower, thats like 50 whp right there.

 

[tybardy]

oh and BTW, jenna... thanks for posting this, i once was thinking about doing a TB spacer untill further looking into it... many people are still throwing money away on these things, good info again

 

[BlueTahoe2001]

Jenna,

Could you explain what gains could be achieved by adding a TBI Spacer, Cold air intake, BBK Throttle body, Under-drive pulley set, JET Chip #2, 180 Jet Thermostat, BBK Headers, Magnaflow Exhaust, and a JET Mass air flow sensor?

Is all this worth the effort and time? What gains could I expect to see?

Thanks,
Tyler

 

[tybardy]

there are several threads regarding many of these items individually all posted by Jenna personally... you will find that she does have an extensive working knowladge of automotive performance... but dont be affraid to use the search feature of the forum.

 

[HMFDZ28]

Jenna,

Could you explain what gains could be achieved by adding a TBI Spacer, Cold air intake, BBK Throttle body, Under-drive pulley set, JET Chip #2, 180 Jet Thermostat, BBK Headers, Magnaflow Exhaust, and a JET Mass air flow sensor?

Is all this worth the effort and time? What gains could I expect to see?

Thanks,
Tyler

I'll save ya some money:

TBI Spacer- waste
Cold Air- not a bad investment
Throttle body- Not needed unless you are runnin a big heads/cam setup. Port the stocker
Under-drive pulley- not a bad investment, just watch your alternator if you have a sound system.
Jet chip- waste of money.. get a real tune.
Thermostat- not a bad investment with a tune. Worthless otherwise.
BBK Headers- deff worth the money if you get a good tune with it.
Magnaflow- whats better then a bit more flow and a lot more sound
Jet Maf- complete waste of money, your truck comes with an 85mm Maf.

So Do the headers and catback, port the throttle body, get a 180 thermostat and pulley and drop around 300 on a bolt-on only dynotune and be much happier with the results.

 

[wmgood64]

I like the whistle!

 

[BlueTahoe2001]

tybardy,

Sorry, should have though of that first.

AND..

HMFDZ28,
Thanks for the help...Sounds like I was going to waste a chunk of money on something so useless.

So Is Blackbear Performance the way to go for a tune? I see and hear so much good information about them.