Pump Gas Limitations

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Originally Posted by Greg E

That's pretty good actually.

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I guess I can't wrap my head around evos that seem to get away with 30 on 93 and make 600AWHP out of a 2.0 liter on 93.

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Originally Posted by Forest Gump

I guess I can't wrap my head around evos that seem to get away with 30 on 93 and make 600AWHP out of a 2.0 liter on 93.

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Much more efficient turbo and inner cooler setup.

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Originally Posted by Forest Gump

I am looking forward to the dyno testing that has been proposed on them. I'd certainly pick one up if it were worth some tangible gains.

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If someone near ray wanted to borrow them while they are off my car the next month or two. I have no problem lending them for a dyno comparison. I have front and rear.

Sent from my Galaxy Nexus using Tapatalk 2

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Originally Posted by Greg E

Much more efficient turbo and inner cooler setup.

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how is it we cannot replicate this, or at least get close? Our best intercooler setups are pretty beefy, is there some problem with them I do not know about? I know it is hard to not have a bunch of bends and other issues due to packaging restraints, but the cores themselves should be ok on the good setups.

is it just DR heads? wouldn't any +1 (stage 3) heads be sufficient for this?

also, are we shelving the idea of strokers for this discussion?

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Originally Posted by Forest Gump

I know it is hard to not have a bunch of bends and other issues due to packaging restraints

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I believe this is part of the issue.

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Originally Posted by IPD

is it just DR heads? wouldn't any +1 (stage 3) heads be sufficient for this?

also, are we shelving the idea of strokers for this discussion?

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Just DR heads. Matt M spent YEARS buying NEW sets of heads and applying different combustion chamber designs in an attempt at eliminating the hot spots in the cylinders. I can't for the life of me find that thread but it dates back to the early 2000 era of 3si back when Matt shared a lot of technical info. :(

BTW my DR750 car will be running a stroker.

I'd put my money on cam lobe profile (lift, and duration) and valve timing and over lap. Combustion chamber shape and texture will also play a factor.

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Originally Posted by IPD

is it just DR heads? wouldn't any +1 (stage 3) heads be sufficient for this?

also, are we shelving the idea of strokers for this discussion?

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I would prefer to keep things as simple as possible and not dive into various displacement options. Bore and stroke size does have an effect, but I think any improvements we can come up with will benefit both stock and non stock displacements.

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Originally Posted by vr4tune

I'd put my money on cam lobe profile (lift, and duration) and valve timing and over lap.

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Completely agree. Everyone is so bent on sticking with the stock cams...

It's really more of a bang for the buck mentality with this group though. 4 cams are expensive to swap out and no one can "prove" results from just a cam swap alone.