which throttle body to get?
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downsouthman1
Member
There's been a lot of talk about this on here as of late. Just search the forums. But here's my .02. If you must get the Accufab Plenum go w/ the 70mm TB as that's what it was designed for. On the flip side if you go w/ the C&L Intake Plenum, as did I, then get the 75mm TB as that's what IT was designed for.
Brisk281GT
New Member
downsouthman1 said:
I second that. I would go with the 75mm TB and plenum from C&L. I have heard of some decent gains with those setups
downsouthman1
Member
I hope to find out. My Plenum/TB combo comes in Monday. I won't be able to give anybody a true SOTP readout as I will still be breaking-in my clutch.
2000GTnoExtras
Founding Member
On a side note, it's really annoying to see so many comparisons involving the C&L without using a 75mm TB. C&L's website clearly recommends a 75mm TB.
For the Accufab plenum, we only offer it with a 70 MM tb. For the C&L, go with what they recommend. As for why the Accufab is sold 70 MM only is because that's what yields the best results. I get tired of answering the question, BUT I'll try again.
The objective in making a throttle body and plenum work efficiently is to get the maximum amount of air through the smallest hole possible. Just like when porting cylinder heads. When you have done that then you have the best product that you can make. When you have to go larger to obtain the same results, you lose low end efficiency.
Now the C&L and the Dragon appear to yield better results with a 75 MM tb. I am friends with the owner of C&L and do not wish to elaborate further. He has his customer following and so does Accufab. I think you should purchase the plenum that fits your style and budget.
It is very rare in this industry that you will find competitors who suggest each others products much less put dyno numbers on their web site. C&L did dyno testing using our throttle bodies on their plenums against the BBK and Ford Motorsport and put the information on their website.
As for why you are seeing testing done using the 70 MM tb, it follows simple dyno strategy of one change at a time. If you make two changes at once, then you do not know what contributed to the power gains (or losses). However, if you really want to know the difference, look on the C&L website. They have done the test and I agree with their results.
Thanks,
John Mihovetz
The objective in making a throttle body and plenum work efficiently is to get the maximum amount of air through the smallest hole possible. Just like when porting cylinder heads. When you have done that then you have the best product that you can make. When you have to go larger to obtain the same results, you lose low end efficiency.
Now the C&L and the Dragon appear to yield better results with a 75 MM tb. I am friends with the owner of C&L and do not wish to elaborate further. He has his customer following and so does Accufab. I think you should purchase the plenum that fits your style and budget.
It is very rare in this industry that you will find competitors who suggest each others products much less put dyno numbers on their web site. C&L did dyno testing using our throttle bodies on their plenums against the BBK and Ford Motorsport and put the information on their website.
As for why you are seeing testing done using the 70 MM tb, it follows simple dyno strategy of one change at a time. If you make two changes at once, then you do not know what contributed to the power gains (or losses). However, if you really want to know the difference, look on the C&L website. They have done the test and I agree with their results.
Thanks,
John Mihovetz
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