High_PSI, a properly designed intake manifold should not sacrifice midrange power. If anything, it will help spool-up. The AMS intake is probably the best one out for the EVO right now. If you do some research, you will see that a properly designed intake manifold can HELP spool-up, while at the same time providing huge top-end gains. My 2 cents.

~fred

 

Correct, i will have to post my dyno sheet with the 3065 and meth and you will see a pretty good TQ "line"

 

Even with the AMS VSR intake, you'll lose about 100-200 RPM in spoolup.

l8r)

 

This is a very generalized statement, you can't just say you will lose 100-200 rpm in spoolup. It depends on the turbo and it depends on the engine configuration (2.0, 2.1, 2.3, 2.4). Maybe with you will loose some spoolup with some puny stock 16g based turbo, but with larger turbos that require high flow, its very necessary to have a high flowing intake tract.

 

+ 1 more

 

Honesty, this website would be a better place if you posted less.

Ludi has a AMS 50Trim Kit I believe, or a 3071, and went from not having to having a AMS VSR intake manifold, he knows exactly what he is talking about and you are wrong. An intake manifold that flows more air than a stock one at any RPM level will almost always take longer to spool than a smaller/more restrictive one.

Scorke

 

I dunno what stock turbo car you are driving, but I get 22 psi by 3000 RPM in 6th gear. I am sure it is the same in all the other gears. TBE + air filter + tune.

 

Your wrong, spoolup is heavily effected by what gear your in I.E how much load is on the engine.

Go out in your car and tell me when you get 22 psi in 1st and second gear, I bet it is MUCH later......

Scorke

 

Will check back after lunch to verify. I just know first gear is done so fast I prob won't be able to tell. I need that stupid tactrix cable for logging.

 

I run a 50 trim, I lost 200 RPM. A bigger turbo would perhaps only lose 100 RPM, hence the estimate I gave. I don't know of anyone running an AMS VSR intake on a stock turbo (kinda pointless), but I suspect that it would lose more than 200 RPM spoolup.

l8r)

 

AMS has stated and shown via dyno sheet that you do infact gain some lag as there is additional volume to fill.

 

From what i understand the goal of twin scroll header design is to have (in a 4-cylinder example) the 2 cylinders which will exhaust at the same time on the same inlet of the twin scroll housing so that no intake/exhaust interference between cylinders occures, so your getting alternating exhaust pulses between to two inlets, which are infact 2 of the cylinders pulses combined more or less. I could be way off but thats what i gather, equal length is not the goal at all.

 

sweet

 

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yes, but that I would imagine is due to the rpm range and cam spec they designed for it to be most efficient...you can use an intake manifold to help decrease lag...but doesn't mean ams did...
just stating facts and not arguing