perfoarmance gain
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Junior Member
Joined: Sep 2003
Posts: 17
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From: illinois
perfoarmance gain
Does anybody know how much is actually gained from removing the airpump and ACV? besides losing about 10 pounds Iam just curious how much ive gained from my 83 ive added straight pipe exhaust and removed the air pump and acv any ideas?
SpAz!
Joined: Jun 2002
Posts: 1,134
Likes: 1
From: CA
not much.. Im sure getting rid of the cats prolly help improve throttle response somewhat, but you want get very far on teh exhaust untill you replace the stock manifold with a header. if you want a few cheap easy mods replace your feul filter and run a search on mechanical secondaries and removing rats nest.
U sUx0rz @ THe IntaRwEB!
Joined: Feb 2001
Posts: 327
Likes: 0
From: Claysburg, PA, USA
You WILL get a few moe ponies from ditching the stock cats with a straightpipe. How much depends on how bad the cats were plugged. As to your question about gains from removal of the smog equipment. No. Nada. Not much if anything at all. About all ya get are less hoses to eventually crack and cause vacuum leaks and a much nicer engine bay.
--Danny
--Danny
Senior Member
Joined: Jun 2003
Posts: 382
Likes: 0
From: Bellingham, WA
Here is a direct quote from Felix's website:
Just thought this might be useful, as you can see, if you aren't getting a header... it is pretty counter-intuitive (except to clean up teh bay) to remove it.
Zachstylez
How do I remove my air pump?
Reasons Not To Remove It:
It may be illegal, depending on where you live & drive
The amount of power it consumes is small
Can cause a HP loss, depending on the year
Can increase backfiring
Can cause rough running
Very commonly causes belt squeal
May accelerate death of catalytic converter
If you use your car where emissions aren't a concern, then you probably are looking for more available HP or you wouldn't be asking the question. With NA engines, exhaust modifications are usually the best foundation for a HP boosting program. The instructions for header installation should provide instructions for air pump removal.
Reasons Not To Remove It:
It may be illegal, depending on where you live & drive
The amount of power it consumes is small
Can cause a HP loss, depending on the year
Can increase backfiring
Can cause rough running
Very commonly causes belt squeal
May accelerate death of catalytic converter
If you use your car where emissions aren't a concern, then you probably are looking for more available HP or you wouldn't be asking the question. With NA engines, exhaust modifications are usually the best foundation for a HP boosting program. The instructions for header installation should provide instructions for air pump removal.
Zachstylez
Nikki-Modder Rex-Rodder
Joined: Feb 2001
Posts: 2,890
Likes: 14
From: Trying to convince some clown not to put a Holley 600 on his 12a.
Zach is right- If you're not doing a header, then leave the pump on and belted.
However, for under $800, you can get the RB long primary header package which will make you feel like your cars been someones beyatch! Your car will feel instantly caffinated! (about 20 HP! )
However, for under $800, you can get the RB long primary header package which will make you feel like your cars been someones beyatch! Your car will feel instantly caffinated! (about 20 HP! )
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