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Anyone actually have the Bisi/exospeed.com header?

2K views 14 replies 2 participants last post by  onesickcrx 
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#1 ·
I've seen the dynograph that Exospeed/Moose posts showing a 8whp gain on a stock D16 over a modified Z6 manifold (http://honda-tech.com/zerothread?id=701332&page=2).

What I'm looking for is -

1) Does anyone have one installed in a EF/ED CRX? Does it fit no problem at all? I have my A/C stripped out, in case it matters.

2) Compared to your previous setup, can you really feel the difference in top end AND better torque?

3) For anyone who has it on a true street car (cats, muffler, less than 150 whp) was it worth the cost to you?

4) Is it as awful looking as it looks in pictures if you got the uncoated version?

Thanks in advance!
 
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#5 ·
What's the diameter of the outlet pipe that has to be welded into your existing system? Is there any point in doing this header if I'm still utilizing the stock cat and a 2 1/4" catback?

There's no mention of what cat/exhaust was on that test case with the stock D16Z6 with 200,000 km on it . . .
 
#8 ·
druternaes said:
1. its loud

2. slightly more low end

3. top end feels like it suffers.
Really? Dyno charts that I've seen from owners of the header showed more than 8whp gains on the top end compared to their previous headers. I believe that someone posted a link earlier in this thread. Here is the dyno chart from the link...

 
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#9 ·
plain and simple it feels much better then my dc sports 4-2-1 and better then my 4-1 bro speed i also had a 4-2-1 good header dont rember what kinda but that was last one i had on.then i put the bisi header on and i had 2.25 inch pipeing felt good pulled niceley then i put exspeed cam and set of isky vavlesprings reatiners and man what a diffrence between port matching exhaust aside of head and cam and vavle springs and retianers feels great from like 4200 too 8700 feels strong as far as other mods home made cold air intake, pro lite act flywheel, racing crank pulley, act clutch, msd dital 6 ignition, 3 " theraml exhaust, 2.5 inch steped up to 3" cat home made, chipped computer, and a vtec controller and it fits with plenty of room in my 91 crx should have plenty of pics once my computer gets fixed. im injoying the header alot and loving the performance also Will from exospeed is great guy lots of d series knowledge i suggest u buy one lol
 
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#11 ·
redzcstandardhatch said:
haha! nice setup man.....i'm in love with the bisi header, but periods and commas OWN you! just kiddin man....hah
Yeah, I feel a little dizzy after reading onesickcrx's post . . . seriously dude - please put some punctuation in your posts and create actual SENTENCES. But thanks for your contribution.

Onesickcrx, are you saying the Bisi header felt stronger even with the 2.25" exhaust (before you upgraded to 2.5"/3" setup)?

Do you remember if you noticed that the Bisi header was any louder than the 4-2-1 or 4-1 headers you had before?

Thanks!
 
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#12 ·
sorry for the confusion i know i can't spell or use proper grammer. my prevous statement about me runnning a exhaust that was 2.25 is incorrect i was running 2.5 inch. i had it conected threw and slip joint but that was with hollow cat and no muffler just resinator. it felt great not as good as when i ran it open header, which is what made me want a 3" exhaust figureing between how strong it felt like open header and the fact i was soon to be juiceing would be best combo. if i was going to be running a all motor street car i would never go past a 2.5 inch exhaust i belive that would be the right size pipeing to run the bisi header to its full potenchil. i dont beleive it was that much louder at all.

once again sorry about my writing
 
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