h22 butterfly removal

samowen27 · 10-28-2009, 01:49 AM

I am building a h22a4 with darton sleeves wiscoe pistons eagle h beam rods and a bryan crower valvetrain. My question is can I delete my butterfly stack out I mean take it all the way out the reason i ask is I'm running a turbo kit and I think there hurting my performance but I would like to be able to pass emissions also but if i cant i will just register my car in anothe city anyways I WOULD APPRICATE SOMEONES INPUT ON THIS

kerry400f · 10-28-2009, 06:41 AM

Step 1: Take mani apart
Step 2: Pull Butterflies Out
Step 3: Put mani back together
Step 4: Enjoy

LUDE_4_LIFE · 10-28-2009, 11:24 AM

^Indeed. Yes it will work good for you. As for passing emissions, have fun doing that even with the butterfly's in. It can be done, but it isn't always so easy. Just get a fake.

samowen27 · 10-28-2009, 12:16 PM

Quote:

Originally Posted by LUDE_4_LIFE

^Indeed. Yes it will work good for you. As for passing emissions, have fun doing that even with the butterfly's in. It can be done, but it isn't always so easy. Just get a fake.

well I have passed my emissions test because I made everthing plug and play it takes me 30 min to set it up. my brother told me to just take the butterflys off but i will take the whole thing off and just change the bolts and studs around to make it fit. thank you for responding did you notice any difference with them out at a idle or WOT

marcus81184 · 10-28-2009, 12:32 PM

What do iabs have to do with emissions?

g-gameslude · 10-28-2009, 01:48 PM

some n/a guys just remove the plate and have the upper plenum bolted to the runners and see gains. i suggest that. by reducing your runner length it will also move your powerband up in the rpm range.

marcus81184 · 10-28-2009, 03:15 PM

Also, when you remove your iab plate the phellum, and manifold don't match up perfectly. You have to plug a small section.

The intake manifold nuts are pita to reach. You might as well add a hondata gasket, and do some porting if you remove.

LUDE_4_LIFE · 10-28-2009, 06:58 PM

Quote:

Originally Posted by samowen27

well I have passed my emissions test because I made everthing plug and play it takes me 30 min to set it up. my brother told me to just take the butterflys off but i will take the whole thing off and just change the bolts and studs around to make it fit. thank you for responding did you notice any difference with them out at a idle or WOT

You might notice a difference at idle, and you will lose just a little bit of low end jam. Better you do it now before your car gets tuned then afterwards.

samowen27 · 10-28-2009, 07:34 PM

Quote:

Originally Posted by marcus81184

What do iabs have to do with emissions?

well it probably has no function for emissions but there is a sensor at the bottom of the intake and when i switch back to my 0bd2 computer with my vtec hack it might throw a code plus the egr is activated by vacuum and the way the intake is designed it could trow a code but this is not a big deal.

Sordz · 10-31-2009, 11:05 AM

my motor made over 600whp with the butterflys but I have recently removed them and the shafts and welded up the holes on the ends because I also agree with you they may be holding us back.

LudeBB6 · 11-09-2009, 08:58 AM

Butterflies won't fail you on inspection for emissions unless there are other things out of whack in which case it isn't likely that it's the butterflies that are causing you to be out of spec for emissions.

10-28-2009, 01:49 AM	#1
samowen27 Newbie Join Date: Sep 2008 Location: Wilmington N.C Posts: 5 iTrader: (0)	h22 butterfly removal I am building a h22a4 with darton sleeves wiscoe pistons eagle h beam rods and a bryan crower valvetrain. My question is can I delete my butterfly stack out I mean take it all the way out the reason i ask is I'm running a turbo kit and I think there hurting my performance but I would like to be able to pass emissions also but if i cant i will just register my car in anothe city anyways I WOULD APPRICATE SOMEONES INPUT ON THIS

10-28-2009, 06:41 AM	#2
kerry400f Lude Addict Join Date: Sep 2008 Location: Cumberland,MD Age: 20 Posts: 729 iTrader: (3)	Step 1: Take mani apart Step 2: Pull Butterflies Out Step 3: Put mani back together Step 4: Enjoy __________________ Future M.E. from Frostburg State/University of Maryland ~6 years left! 1994 Prelude Si (Turbo Project) -Egay Header, but it works for now -Espelir Cat Back Exhaust -Aem CAI -H22A Swap Complete 10/13/2009 2006 Yz450f -Pro-Circuit Ti-4 Exhaust -One wild ride 1992 F-150 -DD To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

10-28-2009, 11:24 AM	#3
LUDE_4_LIFE Preludepower Member Join Date: Dec 2006 Location: Canada Age: 25 Posts: 2,436 iTrader: (0) View Photos By: LUDE_4_LIFE	^Indeed. Yes it will work good for you. As for passing emissions, have fun doing that even with the butterfly's in. It can be done, but it isn't always so easy. Just get a fake. __________________ 1992 Honda Prelude SR H22A 351WHP 284WTQ 11PSI ON A DYNAPACK 366WHP 300WTQ 11PSI ON A DYNOJET To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. IN CAR VIDEO, HAVING SOME FUN To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. DYNO VIDEO'S DYNOJET To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. DYNAPACK To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

10-28-2009, 12:32 PM	#5
marcus81184 True Luder Join Date: Feb 2009 Location: MN Age: 25 Posts: 453 iTrader: (1)	What do iabs have to do with emissions?

10-28-2009, 01:48 PM	#6
g-gameslude Preludepower Member Join Date: Oct 2007 Location: central florida Posts: 816 iTrader: (1) View Photos By: g-gameslude	some n/a guys just remove the plate and have the upper plenum bolted to the runners and see gains. i suggest that. by reducing your runner length it will also move your powerband up in the rpm range.

10-28-2009, 03:15 PM	#7
marcus81184 True Luder Join Date: Feb 2009 Location: MN Age: 25 Posts: 453 iTrader: (1)	Also, when you remove your iab plate the phellum, and manifold don't match up perfectly. You have to plug a small section. The intake manifold nuts are pita to reach. You might as well add a hondata gasket, and do some porting if you remove.

10-31-2009, 11:05 AM	#10
Sordz Newbie Join Date: Jun 2009 Posts: 12 iTrader: (0)	my motor made over 600whp with the butterflys but I have recently removed them and the shafts and welded up the holes on the ends because I also agree with you they may be holding us back.

11-09-2009, 08:58 AM	#11
LudeBB6 Lude Addict Join Date: Jan 2008 Location: NH Posts: 650 iTrader: (3) View Photos By: LudeBB6	Butterflies won't fail you on inspection for emissions unless there are other things out of whack in which case it isn't likely that it's the butterflies that are causing you to be out of spec for emissions.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

PreludePower Forums