Stock Intake VS Racing beat
#26
Boosted Kiwi
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Originally Posted by 'ringmeister
has anybody ever posted timeslips for modded NAs? trap speed more than ET, is a good inicator of power. if there are 8s out there making a true 200whp then you would expect to see them trapping from 97-100.
#27
I think you could even get 25-30 hp with all the mods fanman listed, the hi flow cat from RP adds 10hp, i havent got it dynod since the super cat but you can really feel it, everyone thats rode in my car can even feel it.
#29
I have a problem with every intake I look at.
Stock airbox is ok, but if you really look at, the filter sits really far forword. The oval on the air box has two tap/flap things that stick out for some reason. Nothing inside is smooth. The box looks like it was built to get air directly from the oval. So why is the box so big and heavy? I dont know if it takes advantage of the entire box.
The RB has the bell that sticks out far like stock, I dont see how ramming air into the box would help a great deal unless it can use the air as fast as it is comming in. On the stock box you can atleast force air strait down the pipe.
This is what I see atleast when I look at them. Look at how a vacume works. They are almost always a triangle shape towards the suction. I wonder how hard it would be to suck up a pile of dirt if you hooked the shopvac to the stock airbox and stuck it in a pile of dirt. Would you get to much turbulence? Maybe I'm just crazy.
I think SR had the right idea, but he should of made the intake mount crooked so he could put the oval inlet right in the center.
Stock airbox is ok, but if you really look at, the filter sits really far forword. The oval on the air box has two tap/flap things that stick out for some reason. Nothing inside is smooth. The box looks like it was built to get air directly from the oval. So why is the box so big and heavy? I dont know if it takes advantage of the entire box.
The RB has the bell that sticks out far like stock, I dont see how ramming air into the box would help a great deal unless it can use the air as fast as it is comming in. On the stock box you can atleast force air strait down the pipe.
This is what I see atleast when I look at them. Look at how a vacume works. They are almost always a triangle shape towards the suction. I wonder how hard it would be to suck up a pile of dirt if you hooked the shopvac to the stock airbox and stuck it in a pile of dirt. Would you get to much turbulence? Maybe I'm just crazy.
I think SR had the right idea, but he should of made the intake mount crooked so he could put the oval inlet right in the center.
Last edited by Trekk; 02-20-2007 at 02:46 PM.
#32
Boosted Kiwi
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Originally Posted by olddragger
dont forget the rb flash now available---20 hp is conceivable with it and a few other mods.
olddragger
olddragger
#33
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I have a question regarding the REVi intake...from what I've read on it, I don't understand why exactly the VFAD needs to be removed, at least from a physical installation standpoint. Is there any reason why you wouldn't be able to just simply drop the REVi box right in place of the stock box and leave the VFAD in? I've read that the REVi has a longer inlet mouth, is this why? Would it be too long and start shoving the VFAD hose back in the engine bay inlet opening?
#34
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Originally Posted by Vertigo-1
I have a question regarding the REVi intake...from what I've read on it, I don't understand why exactly the VFAD needs to be removed, at least from a physical installation standpoint. Is there any reason why you wouldn't be able to just simply drop the REVi box right in place of the stock box and leave the VFAD in? I've read that the REVi has a longer inlet mouth, is this why? Would it be too long and start shoving the VFAD hose back in the engine bay inlet opening?
From the RB site :
"Even if the VFAD unit is fully open, inlet air is still somewhat restricted; so removing the entire intake assembly removes one restriction from the intake tract. But, as long as the stock air box has its relatively restrictive inlet mouth, the stock intake duct assembly should not be considered a serious restriction. If you were to simply enlarge the air intake opening on the stock air box, and left the stock air duct assembly in place, this would still maintain the restriction that you would have had with the air box. With the installation of the REVi Intake, we remove the entire stock air duct assembly. The only negative from removing the air duct assembly is a slight increase in noise, with our measurements indicating about 2-3 db (A) increase."
#36
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Originally Posted by 8rotor8
also too, you need to remove the VAD to install the Revi.
Last edited by Vertigo-1; 02-23-2007 at 01:07 AM.
#37
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That was straight off the RB website. If you don't want to take it off, then don't. The reason RB did it was they did not care about the extra 2-3 db of noise and the VFAD was a restriction point.
You DO NOT have to remove the VFAD to put on the REVi.
You DO NOT have to remove the VFAD to put on the REVi.
#39
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If you aren't going to remove the VFAD, You are going to have to find a place to mount the vacuum canister and find a way to route the hoses from the TB to the VFAD
#42
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Originally Posted by Brettus
Also on the back straight of our loacal short course I used to get to 152km/hr in 3rd by the end of the straight - can now reach 164km/hr & bouncing off the rev limiter (not quite enough road to make it worth changing into 4th) .
Disclaimer: I have no data on which to base the above statement, it was pulled entirely out of my ***.
#43
Boosted Kiwi
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Originally Posted by RX8Maine
Congratulations . . . you have become a better driver. The $$ you spent on track days did more than the $$$$ you spent modding.
Disclaimer: I have no data on which to base the above statement, it was pulled entirely out of my ***.
Disclaimer: I have no data on which to base the above statement, it was pulled entirely out of my ***.
Add to this a 1/4 mile time of 14.4 @100 MPH & 0-60 of 5.85s . Plus Comparing vids of my tach vs a couple of others that have been posted here confirms that my 8 is faster than your 8 HA HA LOL
#44
Zoom-Freakin'-Zoom
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Originally Posted by Brettus
Well I'd like to think my driving had improved that much but I assure you this is not the case .
Add to this a 1/4 mile time of 14.4 @100 MPH & 0-60 of 5.85s . Plus Comparing vids of my tach vs a couple of others that have been posted here confirms that my 8 is faster than your 8 HA HA LOL
Add to this a 1/4 mile time of 14.4 @100 MPH & 0-60 of 5.85s . Plus Comparing vids of my tach vs a couple of others that have been posted here confirms that my 8 is faster than your 8 HA HA LOL
trap speed at 100mph... i have to disagree your ecu is doing something for you...
our mods are close.. highest trap speed i have seen is 97.5 and i have to admit to a bit of an elevation change. in favor of speed..
beers
#46
Boosted Kiwi
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Swoope ,
thinking about why i consistently get high trap speeds - (my best is 101.7MPH) . I think it is to do with my higher 3rd gear ratio . JDM spec cars come with different 3rd gear.
When you change into 4th you lose a few mph before accelerating - I don't have to change into 4th on a 1/4 mile run .
thinking about why i consistently get high trap speeds - (my best is 101.7MPH) . I think it is to do with my higher 3rd gear ratio . JDM spec cars come with different 3rd gear.
When you change into 4th you lose a few mph before accelerating - I don't have to change into 4th on a 1/4 mile run .
#47
Zoom-Freakin'-Zoom
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Originally Posted by Brettus
Swoope ,
thinking about why i consistently get high trap speeds - (my best is 101.7MPH) . I think it is to do with my higher 3rd gear ratio . JDM spec cars come with different 3rd gear.
When you change into 4th you lose a few mph before accelerating - I don't have to change into 4th on a 1/4 mile run .
thinking about why i consistently get high trap speeds - (my best is 101.7MPH) . I think it is to do with my higher 3rd gear ratio . JDM spec cars come with different 3rd gear.
When you change into 4th you lose a few mph before accelerating - I don't have to change into 4th on a 1/4 mile run .
yep. that would do it...
do you have the ratios for you trans?
beers
#48
Boosted Kiwi
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dug this out of an old thread where we had a discussion on this . Looks like 1.53 to me .
https://www.rx8club.com/attachment.p...chmentid=89648
https://www.rx8club.com/attachment.p...chmentid=89648
#49
Hey does ne one kno where to get the Revi+Duct for the cheapest price, i know that mazdaparts.com is cheap but i still dont have gold status and its been for ever. I really want me Revi
#50
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Originally Posted by Jax_RX8
Won't add any power, but will give you a little ram air effect. Will also add a little intake sound.