here is a link to a throttle body on ebay. 70mm and plug and play. works with all factory parts. bolts right to the factory manifold too. take a look

http://cgi.ebay.com/ebaymotors/Throt...QQcmdZViewItem

if you have it how is it? post up some pics





Dear Value Customer,

We want to introduce you the new generation of 70mm throttle body. This throttle body can directly bolt on to your standard mitsubishi EVOLUTION intake manifold and can use with stock throttle position sensor(TPS) and stand idle control valve(IAC valve). This throttle body is bigger than after market 4g63 Doluck throttle body(65 mm.) and price of doluck throttle body is $800 USD. You will save a lot on our throttle body

Throttle body description :

We are proud to introduce a new generation of billet aluminum throttle bodies. Newly design when beauty come with performance, improve image of your car and gain better flow to your engine. Our new throttle bodies are available in 70mm designed for use with standard 4g63 evolution 7, 8, 9 intake manifold. No need to weld anything just plug and play on your intake manifold.This throttle body is twin ball bearing shaft as you can see from the picture.



How our throttle body is made?

We used high technology in computer modeling software and test equipment available to produce designs that yield the maximum airflow to let you produce more horse power. All our throttle bodies are machined from billet aluminum 7075 super aircraft grade with precision CNC machining centers for consistent quality and lightweight.

 

Looks like it could be good, but I'm not going to be the 1st to try it. The sellers in Japan though, so it could very well be a remarked JDM TB.

 

same thread topic not too long ago:

https://www.evolutionm.net/forums/sh...highlight=70mm

 

o ok. ha i dident see it. i was just hunting on ebay and saw this. figured id post it up.

 

here is my thoughts.

stock size throttle body is what 60mm???
stock ported is 65mm

this throttle body is 70mm

now from what im told a ported stock throttle body with ported manifold nets around 10/12 hp increase over a stock un ported t/b and intake manifold. im guessing this was done on 2.5 inter cooler piping. ''63.5mm''

now lets say this throttle body works. you port match your intake manifold use the 70mm throttle body and make an upper intercooler pipe out of 70mm piping. would it net any gains???

i have no clue but i may try this idea out. i sent a message to the guy who sells them. lets see where this go's.


in the mean time what do you guys think of this throttle body. and what do you think of my idea

 

In theory yes you would see gains at the cost of spool. But Buschur did a test with his 2.5" intercooler piping and swaping to the 3" intercooler piping and didnt see any gains but lost spool. So i would say if you are flowing enough air yea it would see some gains if not you are waisting your time IMO.

Chris

 

did he swap from 2.5 to 3.0 piping on the stock ported t/b?? if so i can see no gains happening since the air still needs to squeeze through the 65mm t/b

if it was on a 3.0 t/b then ok i can understand. did he go from 2.5 piping to 3.0 piping on a 3.0 t/b and saw no gains??

 

The tests were done on a 3" Throttle Body. I just copied and pasted his post so i wouldnt get any information wrong. There is allot more then what is in question here but at least you will get the idea.

Chris

Test #1 is my baseline run with the new header. This is with our Race FMIC kit, just like we sell. 2.5" inlet outlet and our lower i/c pipe that is shaped like a candy cane. 2.5" upper i/c pipe.

639 whp and 504 ft lbs of torque
20 psi was reached at 4895 rpm
33.68 psi was peak boost reached at 5648 rpm
Boost at 8,000 rpm was 31.54 psi
AIT increase was 1.8 degrees
-------------------------------------------------------------------------------------------------------
Test #2 is my second test. We changed the Race FMIC to the inlet on the face and a 3" outlet. We then used a 3" to 2.5" coupling on the outlet so the outlet size stayed the same, 2.5" upper i/c pipe.

645 whp and 506 ft lbs of torque
20 psi was reached at 4914 rpm
34.18 psi was peak boost reached at 5754 rpm
Boost at 8,000 rpm was 31.52 psi
AIT increase was 1.8 degrees
-------------------------------------------------------------------------------------------------------
Test #3 is my last test. We changed the upper i/c pipe to a full 3" pipe, at this point the FMIC also had a full 3" outlet and it all matched up to 3" throttle body.

638 whp and 500 ft lbs of torque
20 psi was reached at 4973 rpm
33.74 psi was peak boost reached at 6012 rpm
Boost at 8,000 rpm was 32.13 psi
AIT increase was 3.6 degrees
-------------------------------------------------------------------------------------------------------

As you can see the dyno charts even with all these changes make the testing darn near a draw on the results. The numbers from best to worse only vary by 7 whp and 6 ft lbs of torque.

Also, NO part of the tuning was touched for any of these and there was NO change to the boost controller. I also did two runs for each test and took the highest of each of the two pulls for the comparison. 7 whp was the largest difference on any two baseline pulls.

Before anyone asks what will end up on my car. I am going to use our Race FMIC with the face entry inlet and a 2.5" outlet and our standard 2.5" upper i/c pipe.

 

cool thanks for posting that.

so his testing back in the day from 60mm stock tb to 65mm ported showed i think 10/12hp gains.

so maybe bigger piping is no good at this point but maybe going from the 65mm to 70mm t/b will net some gains like it did from 60 to 65.

 

I would say your are correct. I know its weird and doesn't make much sense. I can see why the spool would be effected but as far as not making as much power kind of gets me. Only thing i can think of is the turbo just wasn't supplying enough air to supported the bigger UICP but im pretty sure it was a HTA35R...hmmm.....

Chris

 

yea maybe his turbo was maxed out and could not fill up the bigger piping??? i dont know. so maybe a normal setup where a 35r can fill up the piping would net a gain. the lag agged i can see because it needs to fill up more space.

 

bump for more thoughts/info

 

do as the supras do big intake mani's , big throttle bodys

only people i know that do throttle ports are these guys and probably a local tuning shop
https://www.evolutionm.net/forums/sh...hlight=milspec

 

Thats the problem with allot of these guys now days. They think bigger is always better. Not the case at all. Its all about the right combination of parts working together that will make you power.

I really think we would need more information on your setup, power goals what the car is going to be used for to give you better advice. Not just go get the biggest thing you can and call it good

EDIT: There are allot of company's that do the TB porting. I believe Buschur was the first to offer this service. Im not taking anything from MILSPEC they are great guys and have some very good ideas and products that are going to be released in the near future.

Chris

 

Mods
Cams
Ts 35r kit
Fmic
C.o.p.
Ported stock tb and mani
1kcc injectors
Icp kit
And the rest of the bolt on's

I use the car for drag/highway

Hope this helps