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I was under the impression that the RB25 Neo head flows more CFM than the 26. I'm sure there was something posted in forced induction about it a few months ago. I believe that was when both were heavily ported though, not in standard form.

I was under the impression that the RB25 Neo head flows more CFM than the 26. I'm sure there was something posted in forced induction about it a few months ago. I believe that was when both were heavily ported though, not in standard form.

I think once you start heavily porting something, the differences that were inherently there can almost be said to count for less/nothing. I see a lot of figures being thrown around for the neo head flowing 300+ cfm on the intake, however struggling to have a decent flow rate on the exhaust. I believe this problem is easier to overcome with the 26 head? Feel free to correct if I'm wrong :D

All we can be sure of, is that no matter what head you have, you'll get decent results to a point.

As Dave and Scott here have very well demonstrated.

I think once you start heavily porting something, the differences that were inherently there can almost be said to count for less/nothing. I see a lot of figures being thrown around for the neo head flowing 300+ cfm on the intake, however struggling to have a decent flow rate on the exhaust. I believe this problem is easier to overcome with the 26 head? Feel free to correct if I'm wrong :D

All we can be sure of, is that no matter what head you have, you'll get decent results to a point.

As Dave and Scott here have very well demonstrated.

Just throw every $ you have at it!!

Thats been my approach anyway hahaha

  • Like 1

Finally decided its time to finish off my exhaust. Its long over due. Currently running a 3" system to drift pipes from the cat back. going to run 3.5" instead. Dump/Front pipe is currently 3.5" with a .50" screamer.

Anyone with suggestions of the best combo with tip and mufflers etc?

Car is booked in Thursday for an Exhaust upgrade. Ended up going 3.5" to match the rest of the system. Decided against 4" at this stage to help with clearance levels etc under the car.

I also picked up a 3bay alloy radiator.

Also hunting around for a pair of these. Sill undecided of what spec to go with at this stage.

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Next big even locked in Powerplay Brisbane. Its on May 10th. Got a few mates together and we got a garage to make the day even better.. Got a few minor things to sort out on the car between now and then

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Step one of Operation: Powerplay Prep begins today.

Car is it getting a new exhaust today. As said a few posts up. Ive been running with a 3.5" dump plus screamer, going down to only a 3" system from the cat back. This isnt ideal on a 600hp car and think its long overdue for an upgrade.

Ended up going with 3.5" straight through with a single tip muffler. Bye bye drift pipes :(

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Went to pick up the Skyline with the new exhaust tonight at 7pm...

Safe to say its very different!!!!!!!!

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Long story short dint have enough time to get it completed. Least they were good enough to lend me a car for the night

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