As most people know RPW played around for a while with modifying the stock 65mm throttle body out to 70mm and we managed to get a few to work but had continual problems with them including no suitablility for cruise control etc.

Well we have finally found a solution which is going to suit everyone.

We have now worked out a way to high flow the throttle bodies. This means we are machining everything but the butterfly and its immediet area so whilst the throttle body size is still 65mm, we have machined a lot of material from other key area's of air flow and increased the air flow by around 40% over stock.

The key area of diference is this. When we hooked up our greddy and checked, the stock throttle body does not let any real air flow through until it has opend 30%. From 30 - 40% it is in a mild acceleration and then form 40% up its is really starting to flow.

With the RPW High Flowed unit we have changed this to now it opens at 18% throttle and at 30% is the equivelent of what it was at 40%. But even better at over 50% throttle it is flowing more volume of air through the car.

This means improved htrottle response, more acceleration and most importantly more noticeable power gains.

This can be done to any model throttle body from cruise control to non cruise to units with automatid traction control etc. I would estimate a 5hp gain immediet wiht throttle response and more gains with the greddy fitted and retuned to take true advantage of it.

We only have some early non cruise control throttle bodies in stock so in some cases we may have to do your own throttle body. But this can be done in around 3 hours of work and there is no requirement for modifying the intake manifold whic h makes it a very quick and easy job.

Pricing is even better - $220.00 to modify the throttle body. CHeapest power upgrade you can get.

Interested - call us whenever you wish.

David Thomas
www.rpw.com.au

Call me mustard, I'm that keen! :lol:

Give me about a month and I'm getting it done. Sweet, go well with my greddy

Stupid question? does this void new car warranty?

Hope not...

You'd have to clarify it but I reckon there would be a pretty good chance. Then again, will it be obvious that it's been modified without an upfront inspection?

Stupid question? does this void new car warranty?

Hope not...

If they cant see it, they cant void it :)

Unless the t/b has a window mod, you should be fine :lol:

How much work is there in actually taking the old TB out and putting the new one in? 1 hour? Is it easy?

I'm thinking when Dave has some stock on hand buy a unit outright and just swap the factory one back in when you take it in for a service.

Stupid question? does this void new car warranty?

Hope not...

Yes it would void your warranty.. For the parts it affects..

Ok we're looking at a certain gain from modifying the butterfly and other componets only, leaving the stock 65mm. For non cruise control cars like mine, what if you did both? Increasing the TB up to 70mm and machining the other bits and pieces i assume would make even bigger gains, but then would we need and adjustable A/F device to cope wth the mod. And how much extra would we be looking at for both mods to be done to one TB?

Ive got a 96 TE Altera, and very interested in this mod, but ive got the problem of having cruise control.. dave can you let me know when u get one in stock cause ill purchase when your ready :)

David

Its Damien, i'm very keen, would you be able to test them out first ie the cruise control t/bs to make sure they work before you send them out.

I've been waiting ages for this!!!

Keep up the great work David

will these confuse the factory computer? or will they just bolt straight on?

Bolt straight on. Doubt it would confuse the ECU. It's still being metered by the same unit so if or when there's an increase in flow, the sensor will send it's signal but it would be different to what a stock throttle body would allow through. That's assuming that there isn't a bottleneck earlier in the indiction setup.

There are no fitment issues with this unit as we are not altering the butterfly or its relative position so there is no need to alter any factory settings. The Air flow meter will automatically recalibrate the fuel curve along witht he closed loop oxygen sensor cotnrol

No issues with cruise control because we are not going larger on the butterfly there are no sticky issues.

The only thing is we have only around 2 non cruise control stock units now so if you have either cruise control or traction control we need to do your own throttle body.

would this be a better option than the Twin Throttle Bodies for my haltech?

i doubt it but, im thinking of tiwn throttle bodies..

what are the lead times on these units dave? (the twin systems that is) and would my haltech be able to make good use of them?

Ben.

The haltech woudl be better running our twin tb system as it has more programming and capabilities.

For most other magna's the twin system is for high end use only and the single improved design is going to be the budget line choice. But well worth it - I noticed the difference on my own magna straight away.

where does this new option stand in regards to the 6g72 12v? what tb choices do you have for this engine?

Hey im in the same boat as v64

1996 altera strait 4..
and wondering where more info on this mod can be found?
what is involved what is the 220$ paying for exactly?

if u guys got spare parts and sold them as hole units that would be much easyer to sell over the internet as u can then send them to the costomers..
:S
lol dont mind me im verry verry tyred!!

please send info on avalability and price!!
and what work u do to it!! cheers
d
pines.

im actually a v6 :)

but yeah still very interested none the less

The four and six cylidner TR - TS model magnas use the same throttle body being a 60mm unit.

We have sucessfully machined them out to 64mm for a number of years and the throttle body is a completely different design to the later model vehicles and as such does not have the same problems of sticking throttle etc.

SO you can and always will be able to fit a larger bored out unit to the TR / TS models.

We do have xchange units of those in stock and they are valued at $330.00

Hi David,

Can you do this for the 4g54 in a TP magna?

Thanks,

Sean

Yes we can do it for all mitsubishi model cars have no fears.

Throttle bodies were one the first things we started offering and we have many exchange units in stock.

so whers the closest shop i can get it done in sydney??
:D
330 is a bit steap :S :'(

What sort of gains do you expect from the replacement throttle body (64mm??) in the TR 3.0L V6?

and how are these gains seen over the rev range?

Throttle bodies tend to improve throttle response and make mild improvements in top end performance. No loss of torque or anything stupid. Most four cylinders pick up around 4kw at the wheels so a V6 usually picks up aropund a 6kw gain.

In Sydney there is MRT who can do the work if you wanted.

When yuo see how much work is invloved in these throttle bodies $330.00 is the right price. We have to machine it out, make a new brass butterfly and seal it properly because if it does not seal then it has high idle speeds that cannot be worked around.

Since you're getting more flow through the machined TB in the earlier stages of throttle opening would it be fair to say that even though you're not picking up much in peak power you're going to be generating more torque and more power earlier in the rev range? Or am I talking crap? :D

Crap you are not talking.

Correct more torque at lower rpm which is where the throttle response comes into play. The car pulls harder from a lower rpm level.

The magna has a shocking design on the TB with major restirctions. We smooth out the air flow which is where the power gains come from.

I can confirm what David is saying becuase he showed me my T/B that came out of my car when I put the larger unit into mine and showed me what they machine out and how bad the design is - though I can understand why - with this lip the average family car is nice and cruisy - take out the lip and you gotta be careful as a little touch on the gas will let you know about it!!

This mod will increase the low end torque a little more and improve throttle response tenfold!!

and as for $330 - it is worth it!!!

Manual

Well my TE has cruise control and dave doesnt have any swap in units, if some1 can find one that will suit my car ill send it down to Dave to get worked on, as i use my car every day for work, driving around all day without a TB is gonna make life a little difficult.. maybe ill be able to roll out the drive way and down to the end of ths street? :lol: )

Matty

dave,

what's the different between high flowed one (65mm) as title said and bore out (70mm), coz there's quite a price difference there, which one do you recommend more? my car is a V6 TR with no mods except for K&N panel filter. just wanna make sure, before i make a visit to RPW. thanks.

just wondering with the fitment of any of the tb's. would my unichip have to be re-tuned for maximun perfomance gains?

Okay to clarify here

(A) 70mm Bored out throttle body - as it sais we machine out the throttl ebody and fit a larger 70mm butterfly to it. This is the total machining and hence why it used to cost $363.00 on the 65mm standard TE Magna series on. We stopped doing this on the TE Magna as we had throttle jamming and sticky idle problems which we were never able to truly sort out.


(B) High Flowed 65mm unit - is where we machine particular area's of the throttle body for a higher flow rate but do not touch the butterfly or its key area's. This improves the air flow by around 40% as the stock unit is very restrictive in air flow.

(C) Machined out throttle bodies for all other model Mitsubsihi Vehicles. This we can saftely do as the TE Magna on units are unique and different to every other design mitsubishi has used. Hence that is why we can machiend a stock 60mm Magna unit out to 64mmand not have teh same problems.

So what can be done with TR ones?

So what can be done with TR ones?

C) Machined out throttle bodies for all other model Mitsubsihi Vehicles. This we can saftely do as the TE Magna on units are unique and different to every other design mitsubishi has used. Hence that is why we can machiend a stock 60mm Magna unit out to 64mmand not have teh same problems.

Oh sorry, I didnt read that properly! lol my apologies :D

Just called NRMA and checked with them whether they would accept a high flowed throttle body on my policy without having a hissy, and they're cool about it - no probs at all, so atleast its a mod that ya can make without insurance probs :)

Just called NRMA and checked with them whether they would accept a high flowed throttle body on my policy without having a hissy, and they're cool about it - no probs at all, so atleast its a mod that ya can make without insurance probs :)

did you get that on paper!!!

They were willing to add it to the policy then and there, and I was like nope I haven't had it done it yet I was gonna check if it would cost me more for insurance first. At first they didn't have it as a "dis allowed" mod, but they checked with their supervisor and they said yep, no probs at all, so I have to hope...

That's good news. Think I'll shoot them an email to get it in writing. That means the only thing they won't like about the mods I'll do are cams. I'll have to check about FPR though.

definatley check that because i spent like an hour on the phone speaking to a guy who handled all mod questions for their underwriter who has to approve them and he said no way to throttle body changes. im not to worried about this though anyway coz it would be almost 99% probably that they would never find the difference. youd have to do some serious serious damage to something for them to pull your original throttle body apart and measure the size of the butterfly inside to decide on your claim.

Wonder if you said that the optimised throttle body improved flow down low which improved low down torque which is ideal for towing and carrying passengers up hills :lol:

YEs it improves air flow at low rpm levels and helps provide more torque. This modification smooths the air flow out considerably.

YEs it improves air flow at low rpm levels and helps provide more torque. This modification smooths the air flow out considerably.

Yeah, we saw that Dave. We're just discussing whether our insurer would approve. As far as wide open throttle goes, is there much of an improvement? Earlier you suggested a possible 5HP gain, would that be a peak power guestimate?

I think 5hp woudl be the max gain at WOT, what we are talking about though is that the 5hp gain woudl come in at a much lower rpm level and again teh throttle response at low rpm is where the single biggest gain is.

As for insurance companies - since the external of the throttl ebody is unchanged especially the throttle body butterfly, there is no concern with insurance and police. :lol:

do you know anyone in queensland you would recommend to do this job,as i live in lil ol rocky and i can't do without my car for too long?
thanks for your help and advice

I reckon any mechanic could do the swap. Just get the TB from RPW.

This is a brand new TB right?


and hurry up with those extractors :D

This is a brand new TB right?

No, I think it's a modified one. The TB mod is one of those exhange ones. You pay for a modified TB and send yours back too.

yea i kno its modified, if it wasnt it wouldnt be special ;)

so i gotta send my TB to get worked on and they send it back or do we just exchange TB's or somethin?

Depeending upon which model car you have we may have an exchange on in stock alrady.

If we have an exchange unit then we send you our unit first with a $220.00 core charge. When you return your origonal unit back to us after fitment we refund you the $220.0 core charge. Simple as that.

is that all there is to pay? can you explain what core charge means please?also what method of payments do you except ?eg. mastercard

is that all there is to pay? can you explain what core charge means please?also what method of payments do you except ?eg. mastercard

ok, heres how it works,

Cost of TB $250 whatever it is
"core cost" $250 again

so far $500 you will need to get this t/b

when you return your old one they will refund you $250

so they cost of the t/b is now only $250 - its like a deposit so you will return the old on ;)

as for the payment, Credit cards - NO unless you are 'there' to sign for the goods. you must either pay by
a) Direct depoist - fastest and easiest way
b) cheque - takes longer, generally 1-2 weeks postage + clearance time
c) money order, once again about 1 week before they even able to send out the goods

Ben

Ergo everything as above except for

Core charge and cost of throttl ebody is $220.00

There is still the freight fee etc to be charged but that is usually around $35.00 within australia and this is charged to you direct from Australia Post.

so core charge is $220 plus whatever the TB costs? and whats that cost again?

Ergo everything as above except for

Core charge and cost of throttl ebody is $220.00
There is still the freight fee etc to be charged but that is usually around $35.00 within australia and this is charged to you direct from Australia Post.

Which means that the TB = $220 + Core Charge = $220,

Add the TB to the Core Charge
$220 + $220
=$440

Therefore it will cost you $440 not including postage and handling to get the TB. If you send them your original TB, you will then recieve $220 back.

Thus $440-$220 = $220. :lol:

is it that complicated to understand........ :roll: :D :roll: :D :D

is it that complicated to understand........ :roll: :D :roll: :D :D

:D :D

Anyone knows how much to buy a brand new throttle body from Mitsu?

Funky Fresian Cow? Can u do me a good deal?

Thanks

i was born this way man :cry: