Evo3 vs FP manifold

[94'TSI'AWD]

I got an MHI evo3 Big 16G turbo for $275 the other day and now i need a new manifold. What would be better A Forced Performance Manifold or an Evo 3 Manifold. I am buying it from a friend and there is only a $50 difference between the two but for power output and flow and spool time which would be better? Obviously the FP has a bigger collector and runners but I dont know much about them. But the Evo3 Is rated the best factory exhaust manifold, i'm only planning for 300 -350 Hp would the stock evo 3 mani be good for that or should i get the FP? Please help

 

[xhackerekx]

i have ported evo III manifold in my dsm and work great for me just when u like instal external waste gate buy another.

 

[tragdor]

I have a ported Evo3 and I like it. The FP manifold is one of the best though for price to value. For $50 difference, it's probably worth it to go with the FP manifold. That's only my opinion though.

 

[SOADweskey]

With a Big 16G and an un-ported EVO3 manifold I made 306 AWHP with the sealing ring still inside the gasket and stock cams in my engine. The EVO manifold will get you to your goals but like everyone else says if you have the $50 to spend you might as well get the FP so you can go bigger later.

 

[907gs-t]

Get The Forced Performance no doubt imo.

 

[My1GLaser]

I would get the FP Mani for the extra $50. I like mine!

 

[fwdmaster]

Fp manifold for the win

 

[pboglio]

The stocker/EVO3 will produce more lowend and midrange. The FP manifold is not quite as strong on the bottom end but the topend above 6000 rpms is a large improvement. Kind of a toss up depending on what your going for.

 

[94'TSI'AWD]

With a Big 16G and an un-ported EVO3 manifold I made 306 AWHP with the sealing ring still inside the gasket and stock cams in my engine. The EVO manifold will get you to your goals but like everyone else says if you have the $50 to spend you might as well get the FP so you can go bigger later.

I'm not planning on going any bigger than an big 16g (or at least for right now)
and someone said that the evo3 will get me more low to mid range power vs the fp 6k rpm plus power increase. My question is, why shouldn't i put the evo manifold on i mean we have no bottom end to begin with, not to mention that if you run a big 16g over 6k rpm's aren't you pushing it out of its efficiency range for maximum effectiveness?

 

[welfle18]

I run the fp mani and would definately say go with it for only 50 more. With some port work the evo 3 mani is nice but no need to port on the fp mani. You say you want no more than 300ish hp but whos to say that when you feel that power your not gonna wanna upgrade later in the future. Fp will take you far hp wise. Just a food for thought.

 

[Imback]

I would say get the evo3 manifold and put that 50 towards something else.

 

[eazy2g]

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[pboglio]

The biggest problem with the FP exhaust manifold is the lack of heat shielding options. If you run with no heatshield, you will lose 20-30 h.p. guaranteed from the underhood temperature increase, which is enormous. Then the topend increase gets nullified. IF you heat shield it, then the losses on the bottom end are minor, midrange stays about the same, but the topend pull is insane, even on a 16g. This is why there is no straight forward answer to the question. I run my stock heatshield wire tied over the FP manifold. It ain't pretty, but it works to keep every last h.p. where it belongs. I recommend it but they should have sold them with some kind of heatshielding option other than ceramic coating.

 

[95blackGsTurbo]

The biggest problem with the FP exhaust manifold is the lack of heat shielding options. If you run with no heatshield, you will lose 20-30 h.p. guaranteed from the underhood temperature increase, which is enormous. Then the topend increase gets nullified. IF you heat shield it, then the losses on the bottom end are minor, midrange stays about the same, but the topend pull is insane, even on a 16g. This is why there is no straight forward answer to the question. I run my stock heatshield wire tied over the FP manifold. It ain't pretty, but it works to keep every last h.p. where it belongs. I recommend it but they should have sold them with some kind of heatshielding option other than ceramic coating.

Wow let's see some facts to back this statement up! So every tubular manifold out there is HP robbing because it cannot accomidate a heat shield. It is also very easy to just get it coated to help the heat problem.

 

[streetdsmpwr]

Well you can also wrap a tubular manifold.

 

[FactoryChrome]

^^ It is not rocket surgery that if your under hood temps are hot and you don't have a cold air intake or way of efficiently venting under hood temperatures then you're getting hotter IAT's which are robbing you of HP.

 

[95blackGsTurbo]

But dyno tests show these manifolds to perform right on target with other DSM flanged tubular manifolds. So if what he is saying is true, then this manifold ACTUALLY outperforms stock by almost 50hp but you only see a gain of 20-30 because it raises underhood temps. so much? Just an FYI too, http://www.dsmtuners.com/forums/tur...heatshield-fp-cast-manifold-modification.html

 

[falcon8r]

Here is the heat shield on the FP manifold. It works very good. Easy to clean off. Tres...

P1000926 - finally running DSMtuners Gallery

 

[FactoryChrome]

All you have to do is log IAT with and without a properly designed hood vent above the manifold.

 

[DGajre777]

Here is the heat shield on the FP manifold. It works very good. Easy to clean off. Tres...

P1000926 - finally running DSMtuners Gallery

The heat shield is no longer made.

 

[92AWDHX40]

I found my heatshields top and bottom at a junk yard, free.

 

[94'TSI'AWD]

i was talking to the guy with the FP manifold and he said that a heat shield is not needed at all and whoever said that i will loose HP without a heat shield on is an idiot. That is not my opinion just what i was told by him. Since they dont make that heat shield anymore what should i do? Just get the Evo3 manifold or still get the FP? If i get the evo3 manifold would my stock heat shield bolt on to that? Does a heat shield even really matter THAT much? Im buying the manifold tonight so any more input would be appreciated before i make a purchase.

 

[danl]

If you run with no heatshield, you will lose 20-30 h.p. guaranteed from the underhood temperature increase, which is enormous.

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Here is a log that I stripped off most of the data to make it easier to read. From 0-80 seconds I was backing the car out of the garage then sitting and idling waiting to pull on the road. From 80-380 seconds I am driving on the road at about 40-45mph. RPM's are in orange, IAT pre intercooler is in blue, IAT after the intercooler is in purple. The more I drive the cooler the IAT's going into the motor are. So with a good intercooler and some heat shielding for the air filter this is a non issue. The radiator, for instance, puts a lot of heat into the engine bay as well FYI.

 

[TiradoCC]

Get the FP manifold and have it ceramic coated, the FP manifold is a great piece.
On a customers test with our ceramic he saw 40% radiant temperature reduction, and 25% surface temperature reduction. Cool down was also greatly improved, manifold was cool to the touch in about 10 minutes after shutting off the car (after WOT pulls).

EDIT: With a good intercooler you will sometimes see temps drop after the intercooler, as seen by the previous post and many many results by Buschur, AMS, etc.

Take a look at some data comparing an "ebay" intercooler, and a good quality intercooler:

2 liter, BR GT35r header kit, EBAY (AMS STYLE) FMIC
Starting AIT 64.40 degrees
Ending AIT 122 degrees
Peak boost 42.1 psi
20 psi at 4563 rpm
------------------
2 liter, BRHTA35r, Race FMIC
Starting AIT, 71.60
Ending AIT, 77.oo
Peak boost, 42.27 psi
20 psi at 4691 rpm

Information was taken from HighBoost forums:
http://highboostforum.com/forum/sho...information-with-a-little-turbo-info-mixed-in

 

[RadDsm]

Either manifold will work just fine for your goals, the FP manifold looks nice and performs very well. You can always get it ceramic coated. Here is a pic of mine, coated by Tirado Custom Coatings.

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