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Mmm this is probably two whole new threads lol.. A bit of background first. I have had to change my front radiator inner panel 3 times now due to not enough metal left to hold the radiator so from...

The 4 inch does do a bit. I actually fitted a 5 inch on the manifold lol it did give a increase on the dyno Kw and Nm. Which gave me the motivation to do the current cooler manifold system.

Ben to comment without being critical here the system is good but the only issue I have found with testing a system like that which I have had in the past with a KKK turbo is you stuff up flow...

Draw through flow bench will only tell you half the story Ben. My situation has changed a bit in my life and my flow bench and dyno I had no room to store, A very old friend asked for a long term...

Westy to be very honest I really couldn't tell you. Only some very early learning how the bench worked using a draw through I had very conflicting results doing this testing on different style lid...

Benny This current manifold with cooler attached is for big power but more so with big capacity turbo's like GTX3071 where by there is ample capacity left over including near instant pressure...

The petrol manifolds do not fit.
And yes I did test a round lid makes no difference as this is not a true plenum as such. And I have built and tested many designs but most near all were for...

Yes mate that's about it. But I really have no idea except good guesses at what point this plenum volume needs to get bigger to accommodate higher boosts levels and at what point do we need to...

Makes no difference intercooler or not. You don't have to change fuel settings but from experience a lot more fuel can be added in the spool area so compensator adjustments are required to get the...

Hi Tassie basically the biggest single improvement to the std runner system is to raze the top 50mm. This has the effect to allow the centre entry air to enter the plenum more effectively or more so...

Dude I wish, I love the Tassie offroad scene but alas it wont be this year. Your issues really is a 5 minute fix and I would love to fix it for you. But if you can just gain a bit of confidence to...

I wonder who that would be lol .

Anyway I will add a bit more tech without prejudice about coolers. The STD cooler is fine for the STD TD42ti. Fitting a bigger cooler give very marginal results...

Tassie You really need to reduce your peak EGT's or at least do that with your foot. As already said your STD turbo isn't really good at above 12 psi but you could increase this boost to see if your...

Just a pic to show how silly some of us can get.
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Thanks Paul Always good to talk and challenge my logic lol.. Still looking into the switchblade modded turbo though.

Yes Rodney it will be in action soon enough if Mat gets his way. Maybe I will...