3 Questions
1. I'm looking to see my Ralliart enkei mags--spotless conditions--what would be a good price or am i better off trading in.
2. RPW orginal high flow (40%) throttle body--HAS ANYONE INSTALLED THIS ITEM, does this throttle body require a computer mod
3 is there a suitable upgrade for the Ralliart exhaust--cat back--what would be the gains

3 Questions
1. I'm looking to see my Ralliart enkei mags--spotless conditions--what would be a good price or am i better off trading in.
2. RPW orginal high flow (40%) throttle body--HAS ANYONE INSTALLED THIS ITEM, does this throttle body require a computer mod
3 is there a suitable upgrade for the Ralliart exhaust--cat back--what would be the gains

Good questions... I'm interested in any exhaust mods should they equal more power and also the option of a changeover high flow throttle body. Then a Greddy Emanage or Unichip..

RPW Throttle Body does NOT require a computer mod. You may benefit an extra 1% if that with a computer mod, but thats about it!

SuFz :rant:

RPW claim a 40% flow increase with their throttle bodies?

lol Now this has been flow bench proven ofcoarse? NOT!

Some people have had the RPW TB done and hated it, some have loved it. A few of the guys here have done it themselves very easily.

40% my a*se!!

To get that much extra flow the TB diameter would need to be 80mm+!!!!

I've got a *spare* TB ready to be flowed if you'd like. Just $110 exchange.

Umm... the 40% claim wasn't a peak flow gain.

I would be happy to trade a stock t/b for my "rpw enhanced" *cough* t/b. Do yourself a favour and avoid

I would be happy to trade a stock t/b for my "rpw enhanced" *cough* t/b. Do yourself a favour and avoid


dont bother the standed tb is just as good i have the so called rpw one and only gained 1kw thats it for the bloody money you pay for this thing your better off saving your pennies and doing something worth wile

actually guys, an inside secret, you should be able to modify a AU throttle body to fit. the throttle bodies on my twin throttle system was using AU 78mm bodies... if you dont gain some airflow outta them then "bah" is all i have to say!

dont bother the standed tb is just as good i have the so called rpw one and only gained 1kw thats it for the bloody money you pay for this thing your better off saving your pennies and doing something worth wile

I think you completely missed the point of the RPW item. It doesn't even claim to improve WOT flow. Why do you expect peak power to increase?

Its only purpose is to improve throttle response and part throttle accelleration. And as Redav says quite frequently, putting your foot down more has exactly the same effect.

I don't mean to be rude, but you should put some effort into understanding what a product is designed to do before you go bagging it.

actually guys, an inside secret, you should be able to modify a AU throttle body to fit. the throttle bodies on my twin throttle system was using AU 78mm bodies... if you dont gain some airflow outta them then "bah" is all i have to say!

How much of this modification is needed? That'd be a nice mod to do if it could be done cheaply.. piggy back (or hardcore replacement ECU) required, I'd expect?

How much of this modification is needed? That'd be a nice mod to do if it could be done cheaply.. piggy back (or hardcore replacement ECU) required, I'd expect?


have a read of my twin throttle body post - we belive it will work and you will see gains without computer mods - but expect to see BIGGER gains with mods..

im sorry im no expert yes it has a slight increase in throttle responce but nothing to rave home about and not much noticed on a dyno either

but have you seen these things what is done the job it self is not done right it looks like some one has just used a a ruff sand paper and your paying the earth for these thing id say save some money and do it yourself or get some one to make you one with a new butterfly and done correctly and not just ground down a few little bumps in side the t/b because thats all that has been done to these t/bs

I reckon you're right about making your own.. there's not much to them. I don't trust myself with a dremmel though :shifty:

I reckon you're right about making your own.. there's not much to them. I don't trust myself with a dremmel though :shifty:

well then brendan wait another 8months and when i get my panzy ass up to darwin, then ill do it for you :D

dremmel is your friend :cool:

well then brendan wait another 8months and when i get my panzy ass up to darwin, then ill do it for you :D

dremmel is your friend :cool:

With any luck sometime in the next 8 months I'll get around to actually fitting the one I bought from RPW 3 months ago and you won't have to :bowrofl: Damn I'm lazy.

With any luck sometime in the next 8 months I'll get around to actually fitting the one I bought from RPW 3 months ago and you won't have to :bowrofl: Damn I'm lazy.


hahaha.. bloody bogan! lol

actually guys, an inside secret, you should be able to modify a AU throttle body to fit. the throttle bodies on my twin throttle system was using AU 78mm bodies... if you dont gain some airflow outta them then "bah" is all i have to say!

what mods to the au 78 are we talking and what effects on the cars computor

I did my own throttle body a while back and I do believe I had slight gains... but that is my opinion... I even wrote a page at the time if anyone is interested. I believe I can and could do more to it but wanted to see what changes if any occured from what I had done. Some more could be done to the plenum side but that will have to wait till next time.

This is an interesting debate which may never settle but I saw that sharp lip which couldn't have been doing much good for air flow... anyway this is just how I did it... if you chose to do it yourself like I did so be it at your own risk.

My DIY throttle body page (http://neilk.customer.netspace.net.au/hiflowtb/throttle.htm)

Like I say with every bolt on mod... it might not do much but, it all adds up.

here's a dyno of me th stock and with cannon, cai and hi-flow t/b
surely 16kw and 25% gain tourqe could just be from the cannon and cai?

must admit it was easy hi-flowing the t/b myself, but 78mm AU t/b is just insane!!!!!!
i think ill be fitting the au t/b

PLease feel free to clarrify or correct this understanding:

The computer automatically adjusts somewhat to increased airflow into the engine via feedback from the Airflow sensor (temp, volume, barametric pressure), throttle body position and oxygen sensor readings. The MAS and O2S will provide a lot of the information for fueling calculations during acceleration (closed loop operation) but will refer to preprogrammed maps for steady speed and rpm driving (open loop). It is this part of engine operation that would benefit mostly from a tune but would still survive mild upgrades to the intake.

In surmise: mod your tb with out too much fear of needing a piggy back unless you're after serious gains.

PLease feel free to clarrify or correct this understanding:

The computer automatically adjusts somewhat to increased airflow into the engine via feedback from the Airflow sensor (temp, volume, barametric pressure), throttle body position and oxygen sensor readings. The MAS and O2S will provide a lot of the information for fueling calculations during acceleration (closed loop operation) but will refer to preprogrammed maps for steady speed and rpm driving (open loop). It is this part of engine operation that would benefit mostly from a tune but would still survive mild upgrades to the intake.

In surmise: mod your tb with out too much fear of needing a piggy back unless you're after serious gains.

Closed loop happens at idle, light load and cruising. At full load or heavy acceleration you're in open loop mode.

I knew I'd mix them up. :redface: