8th Generation Honda Civic Forum banner

1 - 20 of 331 Posts

·
Kansas Chainsaw Massacre
Joined
·
6,296 Posts
Discussion Starter #1 (Edited)
Just like the title says, this is the Frequently-Asked-questions thread for the P2R Throttle Body Spacer (FOR THE K20Z3 motor ONLY). There are more threads than I can count that talk about throttle body spacers, and most of them cover the exact same questions.

A lot of these answers will apply to any other throttle body spacer on the market, or the few examples of custom spacers that are out there.

Q: Does the TBS make any power?
A: YES. At the very least, Sickyute and bizzybearfigiblue have dynoed their cars after installing a TBS and have gained power. You can expect somewhere in the neighborhood of a 2-4 whp gain and a 1-2 wtq gain. Gains from the throttle body spacer seem to be across the WHOLE powerband, there is no loss down low. Some users have also experienced a slight gain in gas mileage.
Results of those dynos can be found here:
bizzybear's results:
Sickyute's results:
There is one dyno floating out there that shows unstable hp at high RPM, and the poster wondered if it was due to the TBS. because he is the only person with this problem, it is more than likely that he had a vacuum leak or something was wrong with his particular car.


Q: Will the Throttle body spacer cause my car to run lean or rich?
A: NO. The throttle body spacer should not cause your car to run lean or rich. Your car's ECU is able to compensate for the slight increase in air.
(If someone has some proof to the contrary, please let me know as I want this info to be as accurate as possible.)


Q: If I have a CAI or a SRI, will there be any fitment issues with my TBS?
A: YES. installing a TBS will cause a CAI to rub against the radiator hose, which can lead to problems later in your car's life. Installing a TBS with a SRI can cause the same problem as well. at least one person cut the rubber piece that connected his Fujita SRI to his throttle body so that it would fit in his engine bay. Homemade "X" intakes will fit with the spacer without issues.
One possible solution to the radiator hose intake contact is to put a drink cozy around the radiator hose and zip-tie it in place (or use another method to make sure it doesn't move). This should only be viewed as a temporary solution. Other fixes are to replace the radiator hose or somehow reposition it.


Q: Did anyone notice a difference in power after installing a TBS?
A: Some people have claimed to notice a slight improvement in throttle response, but the majority opinion is that the power gain cannot be felt. Most people have also noticed a slight "whistling" noise at certain RPMS. this noise is so quiet and subtle that it would be impossible to capture it with audio equipment. Most people don't find it annoying and some people don't notice it at all.


Q: How exactly does the Throttle Body spacer work?
A: The throttle body spacer spaces the throttle body a little over 3/4" away from your intake manifold, providing a slightly larger total volume of air to be held within the intake manifold and behind the plate in the throttle body. The high temperature gaskets that come with the spacer keep the metal of the Throttle Body from touching the metal of the Intake manifold, and this helps keep air temperatures in the throttle body and intake manifold somewhat lower than stock.


Q: What does it look like in my engine bay?
A:



Q: Is the throttle body spacer a good buy?
A: For the cost, yes. The throttle body spacer has essentially the same horsepower per dollar ratio as an intake or a header.


Q: What do I need to buy with my TBS?
A: You will need to purchase the Spacer and two high temperature throttle body gaskets. All other necessary hardware will come with the spacer. Most places (like Corsport and Excelerate, for example) offer a "package discount" when you buy 2 gaskets and a throttle body spacer.


Q: How do I install the throttle body spacer? is it hard, or can I do it myself?
A: as far as bolt-on parts go, the throttle body spacer is by far one of the easiest installs to do. it will require you to partially remove your throttle body, and remove the studs in the intake manifold that the throttle body slides on to. several good DIYs can be found in the DIY section:

http://www.8thcivic.com/forums/bolt-ons-all-motor/48070-p2r-spacer-gaskets-install.html
http://www.8thcivic.com/forums/engine/53070-diy-p2r-tb-spacer-gaskets.html (this one was great, but the pictures don't work at the moment. it's really too bad...)

Q: Will I lose any coolant when I disconnect the throttle body?
A:Yes, you will lose a couple of tablespoons of coolant. the amount is not significant, but you can always top your radiator off with Honda type II coolant. :thumb:

i'm sure there are more questions- I know there are more, but I have to run some errands.... Feel free to post more questions on this thread, we'll get them answered. with any luck, this should reduce the number of throttle body spacer threads out there. :thumb:
 

·
Registered
Joined
·
2,400 Posts
Nice. I would also rephrase this:

Q: Does the TBS make any power?


To

Q: Does the TBS help free up any power?
 

·
Kansas Chainsaw Massacre
Joined
·
6,296 Posts
Discussion Starter #10
Nice. I would also rephrase this:

Q: Does the TBS make any power?


To

Q: Does the TBS help free up any power?
I will add to it. :thumb:

added: the throttle body spacer gains power across the whole powerband, there is no loss of power down low.

this is true, and needed to be added. is this what you meant?
 

·
Registered
Joined
·
447 Posts
It's not worth the $120.00. Better to save towards bigger upgrades such as intake, header, exhaust, hondata, cams, etc. I purchased it and decided not to install it and have since sold it. IMO the quality isn't there, ie the gaskets don't match the spacer, burs in the metal, ridges in the metal, and POOR customer service from Sean/Shawn at P2R.
 

·
Kansas Chainsaw Massacre
Joined
·
6,296 Posts
Discussion Starter #17 (Edited)
It's not worth the $120.00. Better to save towards bigger upgrades such as intake, header, exhaust, hondata, cams, etc. I purchased it and decided not to install it and have since sold it. IMO the quality isn't there, ie the gaskets don't match the spacer, burs in the metal, ridges in the metal, and POOR customer service from Sean/Shawn at P2R.
who did you buy it from? my build quality was excellent. P2R claims that the gaskets not matching the spacer is intentional.... and your horsepower per dollar ratio is pretty good with this mod.

sorry to hear that you had troubles with your purchase. before anybody freaks out over the issues pwrful4 had, please keep in mind that there are a lot more of us who have had no trouble and like this upgrade. :wavey:
 

·
Kansas Chainsaw Massacre
Joined
·
6,296 Posts
Discussion Starter #18
I already have a CAI, header, Evo 2 exhaust, reflash. Why would I spend $120 now to get 2-4 whp?

I'm not saying whether or not you should spend the money now- that's of course your call. I'm simply saying that the horsepower per dollar ratio is pretty decent with this mod.

also, I haven't seen a single dyno that shows a gain from the spacer after a reflash. I'd be curious to see how it fares. :thumb:
 

·
Registered
Joined
·
2,400 Posts
That, but I also meant that it's semantics really.
You don't really "make" power, you just happen to free up input/output... I guess you do make power? That vs. pulleys is different I guess. I have no idea what I'm talking about. :D


I will add to it. :thumb:

added: the throttle body spacer gains power across the whole powerband, there is no loss of power down low.

this is true, and needed to be added. is this what you meant?
 

·
Kansas Chainsaw Massacre
Joined
·
6,296 Posts
Discussion Starter #20
That, but I also meant that it's semantics really.
You don't really "make" power, you just happen to free up input/output... I guess you do make power? That vs. pulleys is different I guess. I have no idea what I'm talking about. :D
with the pullies you are reducing a parasitic loss of power, so you are "freeing" it up. this causes an additional amount of air, which leads to more fuel, so you are "making" more power. :thumb: although I see where your going with that.
 
1 - 20 of 331 Posts
Top