im a little biased, but if you plan on staying with a green, its a good mod to make. here is a good comparison of a buschur ported manifold vs full-race manifold




pretty good explanation


6whp? look at the dynoplot above, i see peak gains of ~25 whp, and significant spool improvement...


porting helps a little (very little) but will not perform as well as a full-race manifold. .. i disagree you would see identical results. if the car was otherwise 100% stock with stock o2, stock downpipe, stock turbo stock everything, then maybe they would perform the same, but thats only becuse the engine cant breathe so the manifold isnt being used anywhere near its potential...

Full-Race manifolds will not crack and will not need to be re-welded. Our manifolds are very overbuilt and are meant for street cars that see inclement weather, hot summers, freezing winters, snow, sleet, ice and everything in between. long term durability and reliability is paramount

 

Very reassuring to hear!

Only one thing to do now...

 

I guess it's the whole "You get what you pay for" philosophy. Megan tubular headers (around $200) are the ones I see cracking all the time. Some guys figure if it cracks in less than a year, the company replaces it with a brand new one under warranty. I've only heard of one high quality AMS tubular ever cracking. All depends on how it was taken care of too.

After looking a little more at the full race manifold, I think it's a quality product. I couldn't find any search results of it letting anyone down. Didn't mean to judge too soon, but I guess I'm always a little bit paranoid of parts I haven't seen installed yet. Little expensive? yeah, but if it does the job everyday without a problem, who cares. You'll spend more in the long run if you bought a cheaper product (::cough:: megan) and damaged something.

This will be a brand I would consider when/if I do a 20G-LT.

 

I would say you are more than biased. Burshur tested your manifold on his near 500 dynojet hp car. It was good for 6hp. There was no significant spool improvement. I can pull up the dyno graph for you if you like. I will trust a back to back from buschur on a maxed out setup, over your back to back on a 340hp car.

I cant wait for one of your twin scroll manifolds to be swapped in to a flying maxed out setup and we find it looses hp like good tuners have been saying for 40 years.

 

Full Race, I'm having trouble reading your dyno. In what RPM range is the 25 whp gain?

 

it looks like the graph follows increments of 500rpm, with the hp/tq crossing at 5252rpm.

from this example, there appears to be 500 rpm or so sooner spool with the Full-race and like 15whp extra on the topend as well...

 

why is the lower power number on the full-race-geoff dyno chart so smooth & damped?

i have to believe that a after market header will make more power than a stock mani that's ported on a fp-grn if everything else is in place to allow the entire aspect of the engine/turbo to breath, including the tune......i said i beleive, but i will find out in the next month or 2 if the megan header is worth the hassle or not, with my own test.....

 

I have a hard time readingthis graph, but 25whp is ridiculous. The smoothing looks perfect on one pull and crazy on another.

I would love to see back to back testing done. Any tuners out there willing to do this that has access to a FR manifold and BR ported stocker?

Anyone in the MD/PA area up for a back to back testing? I have a BR ported stocker in my garage. Maybe we can talk Chad up at CBRD to do some "free testing" LOL.
jason

 

It would need to be done with an FP EvoGreen, and not an OEM turbo, to see if there's a significant difference.

 

I have a pretty basic common setup I would say:

Snow Performance Meth kit
FP GREEN
Full Race Manifold
Hallman MBC
GSC 272's
ARP Head studs
Helix Intercooler pipes
Turbo XS FMIC
Helix 3" TBE w/ titek O2 Housing
Walbro FP
PTE 780cc Injectors

My numbers on the dyno were 387hp 385tq on 91 octane & 100% methanol. I just ran this past weekend a best of 11.65@116mph with a 1.72 60'ft. My downside is I have an MR so I have to shift to 5th gear before crossing the line but no biggie. Out of curiosity, are my dyno numbers to low or high for the times I hit at the track?

 

Where were you tuned? Which dyno, I mean?

 

DynoJet @ Tuning Technologies

 

On a Dynojet, I would hope to hit those numbers without meth. Good ol 91 octane!! How much boost?

 

What I'm trying to say is that Dyno numbers mean nothing, they may seem low or high, I really don't care. The car drives awesome and obviously it's capable of pulling good times. Before the meth setup I was pulling 321whp & 321tq, low numbers right? With that power I was doing 12.3's at the strip on straight 91 octane. And yes, 91 octane blows big time!

edit: I'm running a peak of 28psi

 

there is something wrong with your car if its only making 326hp and you have all the stuff thats in your signature go back to turbotrix asap