Thanks to Joel for putting the graphs together. (Joel, I got the run numbers backwards) These runs were made 8/1 in about 102 degree weather

The Blue graph is the current 4-2-1 that Corey is running and the Red is the old 4-1 that 2point6 has now. All that is on the car is the header with 2-1/2" tubing and an 18" long resonator that dumps at the end of the tunnel, stock ECU, CAI and lightened fylwheel. Corey can update if I'm off.

This 4-2-1 configuration beats the 4-1 upto 4900 and then from 5800 on. It looses in that 900 rpm between. This is the area that I'm trying to correct with the next version. The current 4-2-1 doesn't like the VTEC crossover too much. Here are some comparisons.

4-2-1 4-1
4000 95.8 whp 92.0
7200 180.2 177.9

 

Dang Dave, good work! I forgot, but does the new 4-2-1 bolt on w/o the cutting the sub frame? What kind of collector are you using?

 

you want me to fix it/change it? Did you shrink it, cause I thought it was bigger than that?

 

Nice numbers I didn't expect it from the 4-2-1. How will a hi-flow cat and the rest of the piping plus muffler effect those numbers...guesstimate.

 

wow! how big are the primaries?

 

Big enough that i can bearly get my hand around one Dave knows the exact specs, and I havn't changed the car at all since the dyno, so its putting out the same HP..

I was wondering where those dyno's were the other day..

 

The primaries start out at the same diameter of the DC Sports secondaries.

 

Did you make the Graph smaller?

Anyways I fixed the titles and have a bigger pic

 

Thanks again. No I didn't do anything to the size it just came up that way.

 

what was the baseline before the header? numbers look good!

 

Really that's weird cause the size I just posted is the size I sent you....maybe imagestation is shrinking it.

This is the header and an intake only right? Or some other work

 

We never got to do a baseline with this engine

Yes, just header, CAI and lightened flywheel, nothing else.

 

why is 2point6's car only making 180whp?

 

Those are SAE numbers, and they are from Corey's Prelude, Honda318dx (?) on the board. 2point6 has the 4-1 now, but this was when it was on Corey's car

 

ahh, i see.

 

Cost?

 

I just saw this thread, are you guys making headers for 5thgen? sorry, missed the original context. Youd bring a smile to my face if thats the case!!!!!!!! exhaust tunning is somthing thats fascinated me since i started working on cars (just over a year ago, but ya gotta start sometime...)

lmk

 

The only fitment issues I'm working towards is clearing the sub frame with no or vey little modification. The collector will be 2-1/2" so the cat and B pipe will require modifcation for either the 4th or 5th generations. It will NOT be a bolt on piece.

 

sorry, still confused, are you making a head-to-downpipe-ala-spoon'sH22header? or are you constructing a full head-to-cat piece?

let me know if your planning on producing somthing, i was going to do a header next, my plan was to get and OBX stainless (dont laugh, same as DC and costs $160) and then get a 2"- 2.5" collector from burns stainless, and then have it fit to a new cat and then to my brullen exhaust, all welded, no flanges. BUT if your working on a whole setup id rather wait. LMK and good luck with the company!!!!!

-b

 

I just bought a MUGEN H22A header... how much better are yours compared to the one i just got.... if so i will buy one... my motor is a 95 prelude VTEC.

do you accept trade in's and cash ? or i could sell here...

 

Thanks

I'm not concerned where the collector ends. A 2-1/2" cat wil bolt to the header and then the cat back will start from that point.

 

ahh, i see...


any plans for production/pricing? keap me posted please.

happy tunning