Evo X 75 mm Throttle Body from Boomba Racing
Evo X 75 mm Throttle Body from Boomba Racing
Boomba Racing is proud to present another ground breaking innovation:
Evo X and Ralliart 75 mm Billet Aluminum Throttle Body.
Evo X and Lancer Ralliart 75 mm throttle body is a direct replacement of the factory unit. Boomba 75 mm throttle body does not require any additional tuning after installation. Throttle body comes as a kit including stock manifold adaptor plate and 60 mm hose adaptor, which allows installation with factory intake hoses. The kit also includes 75 mm hose adaptor and all mounting hardware.
The throttle body is designed in such way that it has to use stock TPS and servo motor.
Enlarging the diameter to 75 mm allows the increase of the throttle cross section area by almost 56% over stock throttle body. Replacing the stock throttle body with new Boomba 75 mm throttle body will increase the horse power and greatly improve engine response (even with stock pipes and turbo). Boomba 75 mm throttle body provides limitless possibilities of increasing engine power when combined with larger intake hoses, aftermarket intake manifold and larger turbo.
Optional 75 mm straight through adaptor is available.
Throttle body adaptor bolted to the intake manifold.
Boomba Evo X 75 mm throttle body with TPS installed and ready to be bolted to the intake manifold.
Boomba Evo X 75 mm throttle body installed.
Throttle bodies are CNC machined out of billet aluminum. Parts are available in natural aluminum, red and black anodized finishes.
All parts are manufactured to our legendary high quality standards and backed up by our warranty.
Evo X and Ralliart 75 mm Billet Aluminum Throttle Body.
Evo X and Lancer Ralliart 75 mm throttle body is a direct replacement of the factory unit. Boomba 75 mm throttle body does not require any additional tuning after installation. Throttle body comes as a kit including stock manifold adaptor plate and 60 mm hose adaptor, which allows installation with factory intake hoses. The kit also includes 75 mm hose adaptor and all mounting hardware.
The throttle body is designed in such way that it has to use stock TPS and servo motor.
Enlarging the diameter to 75 mm allows the increase of the throttle cross section area by almost 56% over stock throttle body. Replacing the stock throttle body with new Boomba 75 mm throttle body will increase the horse power and greatly improve engine response (even with stock pipes and turbo). Boomba 75 mm throttle body provides limitless possibilities of increasing engine power when combined with larger intake hoses, aftermarket intake manifold and larger turbo.
Optional 75 mm straight through adaptor is available.
Throttle body adaptor bolted to the intake manifold.
Boomba Evo X 75 mm throttle body with TPS installed and ready to be bolted to the intake manifold.
Boomba Evo X 75 mm throttle body installed.
Throttle bodies are CNC machined out of billet aluminum. Parts are available in natural aluminum, red and black anodized finishes.
All parts are manufactured to our legendary high quality standards and backed up by our warranty.
How close can you get to this with the stock manifold? Can it only go as far as maybe 70mm before you start running out of material?
Keep in mind he has this installed on his own MR...
Keep in mind he has this installed on his own MR...
It actually does look like it will physically bolt-on very easily, as for getting the proper tuning on it to get max WOT horsepower I would have to see it first hand to see what adjustments would be necessary. Likely having the DTC Disable codes on via EcuFlash would resolve the potential limp mode codes from the airflow and torque limits tables. Since the increased airflow should just be countered as it gets sucked in easier through the airflow sensor it should just be all gravy. Someone needs to test it out and report back, preferably with before and after dyno results with an aftermarket turbo or even a blitz intake manifold.
Agreed. Someone is going to have to bore out the IM (stock or aftermarket) opening to 75mm in order to make good use of this TB. I don`t see the purpose of running these with the 60mm adoptor still in place, if anything it may create turbulence and hurt power.
It actually does look like it will physically bolt-on very easily, as for getting the proper tuning on it to get max WOT horsepower I would have to see it first hand to see what adjustments would be necessary. Likely having the DTC Disable codes on via EcuFlash would resolve the potential limp mode codes from the airflow and torque limits tables. Since the increased airflow should just be countered as it gets sucked in easier through the airflow sensor it should just be all gravy. Someone needs to test it out and report back, preferably with before and after dyno results with an aftermarket turbo or even a blitz intake manifold.
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I ported my intake manifold to around 65-66mm in anticipation for a larger TB down the road.
The smallest OD of the TB neck seems to be around 72mm, which means I have about 3mm minimum wall thickness which is about as thin as I want to go. You still could flare the opening out at an angle as the flange area has some meat on it with about 82mm spacing between the bolts diagonally. Likely the best bet is to port open the 60mm adapter flange that mounts to the intake manifold to 65mm to match the intake manifold, or slowly taper it out from the IM flange to the outer edge of the new TB flange to match the full 75mm.
I'm still trying to calculate what a 75mm TB with shaft & plate blocking the middle will flow relative to an unobstructed section of tubing, my guess is anywhere between 65mm and 73mm.
I won't be getting one made right away, but my next modified intake manifold I'll just have a new aluminum flange and neck area welded on that's 75mm.
Last edited by Hiboost; Nov 16, 2009 at 11:37 AM.
Evolving Member
Joined: Oct 2009
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From: SL, UT
This is all from personal experience with other turbo Mitsubishis as well. I remember data-logging the gains from a 65 mm upgrade before boring the intake manifold to match and they were definitely appreciable.
I'm also running a 65mm big bore and felt the benefits, no doubt about it. Most ppl running 2.5" IC pipe can benefit from this setup because of the smooth transition.
If 75mm is a bottle neck for your setup, then yeah this would work very well, and 3" IC pipes too. But if the in and out are smaller that the TB diameter, then I am pretty sure that there is no gains from a gigantic TB. I will even say that it is the wrong idea to do all together, air like constants, so a massive change in diameter, in terms of air flow in a pipe is a bad idea, big or small.
If 75mm is a bottle neck for your setup, then yeah this would work very well, and 3" IC pipes too. But if the in and out are smaller that the TB diameter, then I am pretty sure that there is no gains from a gigantic TB. I will even say that it is the wrong idea to do all together, air like constants, so a massive change in diameter, in terms of air flow in a pipe is a bad idea, big or small.
Not necessarily. Keep in mind the throttle plate itself and the rod and hardware take up a good chunk of cross sectional area. I'd say moving to a 65 mm plate would net you gains because it would negate flow lost by the loss of true cross sectional area with the stock 60 mm plate, but I'm not sure how much more could be squeezed out of a 75 mm plate.
This is all from personal experience with other turbo Mitsubishis as well. I remember data-logging the gains from a 65 mm upgrade before boring the intake manifold to match and they were definitely appreciable.
This is all from personal experience with other turbo Mitsubishis as well. I remember data-logging the gains from a 65 mm upgrade before boring the intake manifold to match and they were definitely appreciable.
Last edited by LVSBB6; Nov 17, 2009 at 07:39 AM.
Is your shop car a daily driver where it has seen all different loads and conditions?
Does the TB includes any gaskets for mounting in between the adaptors?
Does the TB includes any gaskets for mounting in between the adaptors?
Yes it is daily driver. Our Evo is stock (no mods except for our parts).
You have to reuse stock gasket between IM and TB adaptor. We have O-ring seal between the adaptor and TB. You also have to use TPS and servo from your old TB.
You have to reuse stock gasket between IM and TB adaptor. We have O-ring seal between the adaptor and TB. You also have to use TPS and servo from your old TB.
