Intake pipe dia question?

[s2tommy]

Hi everyone, at mo I have 76mm off my intercooler, down sizeing to 65mm to go into STD throttle body hose, so would I benefit by makeing it 76mm all the way to throttle body?? Or will this just add to turbo lag?? Cheers tom

[K Simmonds]

I'd leave it the standard intake in place, apart from checking/changing the rubber hose's. The standard intake is well thought out and bolt's up really tidily.

You don't need to go 76mm all the way from the cooler to the throttle body, unless your planning some very serious mod's. What inter-cooler you using by the way?


I always use a new OEM Throttle body hose, they fit spot on and have ridges that locate the clamps properly.

[s2tommy]

Yes serious mods have been done, hopeing for over 500hp once mapped maybe more fingers crossed. I was thinking of making it 76mm up to throttle body. Because the throttle body itself is 76ish if remember right?? be nice to have equal size pipe on each piece. So far I have 90mm air filter to turbo, 65mm maybe bigger turbo to intercooler.

[K Simmonds]

Yes serious mods have been done, hopeing for over 500hp once mapped maybe more fingers crossed. I was thinking of making it 76mm up to throttle body. Because the throttle body itself is 76ish if remember right?? be nice to have equal size pipe on each piece. So far I have 90mm air filter to turbo, 65mm maybe bigger turbo to intercooler.

In that case build yourself a Custom intake.

[driftin jo]

Pointless at 500 HP and even above, unless you are going to fit a bigger throttle
and better intake manifold, the intake pipe is not restrictive.

[Acidburn]

as above, also check out will from vrs's car, thats doing 600+ on stock pipework to throttle body (apart from the maf being placed there)

[newsh]

Reverse intake would be good!

[Jamo]

It doesn't add lag, it has been documented on here that people who have upgrade have noticed no difference in spool and feel it pulls better.

I would do it 70mm to 76mm it does no harm. Mine will be 70mm. People like G60rallye, Terrybullwon etc all run 76mm

Personally I would look to run a reverse inlet before messing with the pipe sizes

[K Simmonds]

It doesn't add lag, it has been documented on here that people who have upgrade have noticed no difference in spool and feel it pulls better.

I would do it 70mm to 76mm it does no harm. Mine will be 70mm. People like G60rallye, Terrybullwon etc all run 76mm

Personally I would look to run a reverse inlet before messing with the pipe sizes

I agree,

A reverse intake set up would be far more beneficial than revising the the stock intake. As mentioned by others above it's not a restriction even at serious power levels.