RX8 Throttle Body Bypass Kit +8hp
Originally Posted by DaveCM203
I have a stupid question. Won't the tb get hot anyway? Won't the heat from the motor soak into it? I am not a mechanic nor a tuner. Just curious. Has anyone dyno'd before and after? Well, other than some idoit that is trying to sell a hose and a couple of fittings?
Consiglieri
Joined: Feb 2004
Posts: 1,275
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From: yourI'mgirl
The TB is only joined to the rest of the engine through plastic components. Plastic is a poor conductor of heat, so at least its not bolted directly to the block. Personally, I don't think the intake charge will be much cooler at all from the bypass mod. The air is traveling so fast past the TB that there isn't much time for heat transfer to take place.
BTW: Unless you have a special temp sensor installed, you won't be able to log the temp change. The MAF is before the TB and that's where the CAN gets the temp readings.
BTW: Unless you have a special temp sensor installed, you won't be able to log the temp change. The MAF is before the TB and that's where the CAN gets the temp readings.
DaveCm
Joined: Apr 2006
Posts: 670
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From: Central North Carolina
I am with madDog in that it won't make much of a change. I did find this website that may help you calculate the effect. I am not smart enough to know.
http://hyperphysics.phy-astr.gsu.edu...stefan.html#c2
http://hyperphysics.phy-astr.gsu.edu...stefan.html#c2
Consiglieri
Joined: Feb 2004
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From: yourI'mgirl
Here's a good way to think about it. How much surface area do you think there is in an intercooler? I'll bet there's close to 20-30 square feet of surface area in all those little passageways. You need that kind of surface area to really transfer heat when the air is moving so fast. Now, how much area is exposed in the TB? I'll bet less than 1 square foot.
Originally Posted by theboy
since no one answer me how does it help on giving more HP.
so heres my second question, Don't the air pass throught the intake can cool down the coolant pass through it? since the coolant heat up the intake.
so heres my second question, Don't the air pass throught the intake can cool down the coolant pass through it? since the coolant heat up the intake.
2nd question - yes , a little , why is that relevant ?
LOL, it's another one of those pointless 1 hp mods, the sky must be falling for sure 
it's really no different than dropping one screen out of the OE intake, both have been proven to generally not have any negative affect on the vehicle's operation
it's really no different than dropping one screen out of the OE intake, both have been proven to generally not have any negative affect on the vehicle's operation
Mu ha.. ha...
Joined: Aug 2004
Posts: 14,361
Likes: 3
From: Cali
I have it and believe it works. When it was 105 degrees outside temperture and tracking I actually could out pull a few heat soaked turbo's on the track.
Boy were they surprised. So was I !
8 HP is bull, but a 1 to 2 hp gain or not losing 5hp in hot weather due to heat soak is good.
Boy were they surprised. So was I !
8 HP is bull, but a 1 to 2 hp gain or not losing 5hp in hot weather due to heat soak is good.
Originally Posted by mysql101
You say PROVEN as if your expirence means it applies to all cars, which it doesn't.
No, I say proven as specifically in the RX-8.
plenty of people are running one intake screen without issue, plenty of people are bypassing the TB coolant passage without issue
I have never made any claim about any benefit on either one, just that they have been done and without any noted negative consequences. Can we drop the peepee match now?
I4NI
Joined: Jun 2006
Posts: 833
Likes: 2
From: Hawaii
Originally Posted by 9krpmrx8
This is such crap. People will believe anything. It may help your engine with regards to heat soak but no way is there any real RWHP gain as a result of this mod. This mod has been around forever.
Now the Turonator is a different story. I've got 40whp!!!
Last edited by Silver_Surfer; Jan 27, 2007 at 01:53 PM.
Originally Posted by Razz1
I have it and believe it works. When it was 105 degrees outside temperture and tracking I actually could out pull a few heat soaked turbo's on the track.
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well,
thanks for settling that..
beers
after you edit. sure you do..
more beers
thanks for settling that..
beers
Originally Posted by 9krpmrx8
Okay, syn oil vs dino makes no difference if you change it often but if you want to go longer between changes then it is a good choice but why risk it in the 8 due to the grief you could get at the dealer for using it should something happen engine wise.
Pulleys work fairly well for the price I guess but only true dyno testing would confirm.
Exhausts and intakes vary by brand, etc. but should be the last mods you do due to the low HP per dollar ratio. Most of the 8's with basic bolt-ons are no faster than their stock counterparts. Now a good filter and a good exhaust system are almost a must for the FI gusy if they want to acheive optimum boost and HP.
Learning how to drive properly will get you better results than the typical I/H/E.
Pulleys work fairly well for the price I guess but only true dyno testing would confirm.
Exhausts and intakes vary by brand, etc. but should be the last mods you do due to the low HP per dollar ratio. Most of the 8's with basic bolt-ons are no faster than their stock counterparts. Now a good filter and a good exhaust system are almost a must for the FI gusy if they want to acheive optimum boost and HP.
Learning how to drive properly will get you better results than the typical I/H/E.
more beers
Originally Posted by 9krpmrx8
Whatever dude, don't be mad because you spent all that money and I would still spank you without the N20. You remind of the guy on this site that goes to my local track with verything Mazdaspeed makes for the 8 and still can't break a 15 second 1/4 mile.
you remind me of someone with just a bottle and no knowledge.
btw, the car is not about the .25 mile.
if you would like to ? my posts read them. i have read yours. nothing useful so far...
btw, if you want to chat pm me.
beers
⎝⏠⏝⏠⎠
Joined: Apr 2004
Posts: 8,625
Likes: 5
From: USA
Originally Posted by 9krpmrx8
Okay, syn oil vs dino makes no difference if you change it often but if you want to go longer between changes then it is a good choice but why risk it in the 8
Originally Posted by 9krpmrx8
Yeah, I'm a noob. 
Thanks for the warm welcome. 
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Thanks for the warm welcome. .
RX8 newbie!
Joined: Jan 2006
Posts: 2,362
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Originally Posted by Brettus
They did answer you ...... to put it more simply - hot air is less dense therefore less air mass is drawn into the engine therefore less power is made .
2nd question - yes , a little , why is that relevant ?
2nd question - yes , a little , why is that relevant ?
ok so if it cooldown the coolant, isn't it a good thing to avoid detonation?
the stig is my hero
Joined: Feb 2006
Posts: 701
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From: NC
I think the value of this mod is in not doing it. While doing this mod may reduce the temperature of the incoming air by .01 degrees, by not doing this mod you will save at least 10 minutes and somewhere between 3 to 5 dollars.
Registered
Joined: Dec 2002
Posts: 219
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From: Seattle, WA
Originally Posted by zenmoused
I think the value of this mod is in not doing it. While doing this mod may reduce the temperature of the incoming air by .01 degrees, by not doing this mod you will save at least 10 minutes and somewhere between 3 to 5 dollars.
Laters!
Edgardo
