Soooo...who's the tyrant among these manifolds?!?!

 

Not sure if anyone else noticed but this isn't an accurate way to gauge WHP/$.

According to your math, if the Buschur ($275) gains 5whp it would beat them all at 55 whp/$.

The correct term would be $/WHP (dollar per WHP) and the lower the number the better

 

any feedback on maxford manifolds? I saw a member selling one in the bm, looked better than the meagen

 

hafe cast manifold is a t3 flange and not for any turbo out there sorry. Unless they made a new one I havent seen even then an all around one fits all manifold cant be to good seeing the stock turbo is twin scroll and most others are going with a t3.

 

I don't think this is relevant for a couple reasons. The first are the claimed values are subjective to too many factors, ie build of car, dyno, dyno conditions, and who's testing. More importantly, an exhaust manifold might show a peak gain in hp at some rpm but lose more across the power band than the gain is worth. Matching short fat runners might make more high rpm power, but another design might be targeted to mid or low range and show lower peak gains.
While peak numbers are one data point to measure performance, it's a ridiculous comparison because it tells so little of the story.

 

This is true but without seeing any graphs the $/WHP is a good way to gauge peak gains in a manifold.

 

hopefully EPM mani will take over this thread... good info inside though... great job with the calculations ect

 

They'll have to make it fit in an evo engine bay first

 

cmon! does anyone have the borla mani?I am looking to buy one soon.i found one for $250.Is it worth it?I am running a stock 9 turbp with bolt ons and a tune.Will this help with spool up,throttle response down low,or just mid-up top? heres a pic its bea-utiful! http://www.jscspeed.com/evo/exhaust/borla_header.htm

 

Here's some pics of my Shearer manifold...

 

bumpp

 

What are u bumping this for? For me to update the OP? haha thanks Ali...

 

lol no trying to see if any has any dyno #'s. bringing it back wont hurt i guess

 

hi have a doubt, my cousin just bought his evo 8 and he only have exhaust and cold air intake. now he want a manifold but how much can we expect or gain (whp). consider that the evo is almost stock .thank

 

You are in the wrong business. If you can't justify spending $300 on a header for your Evo just don't justify having one Evo at all. Like you said, if you are too broke then I suggest you change cars (something cheaper).

I justify money on a car part when it deserves it.

Carlos