Let's Talk about the PC-V for a Minute, Can We?
Thread Starter
|
Cruiser
Joined: Jul 2008
Posts: 146
Likes: 1
From: Houston, TX
Let's Talk about the PC-V for a Minute, Can We?
I installed a Hypertech mod in my '94 Corvette a while back and pulled a dynoed 15 extra horse power and 25 lb/ft of torque in my otherwise bone stock car.
So I'm wondering...
I'm planning on a K&N filter and the V&H Big Radius 2-into-2 pipes for my '07 Dyna. I know the retro PC-V will benifit me after the mods, but I'm wondering about installing it before the mods. Would I see any gain there as I did on my Corvette? I know they're two different animals, but I still think it's a valid question and to some limited extent a fair compairson, and since Fuelmoto will make adjustmens to the module to accomodate future mods, that opens up my options.
Or should I do the mods first, and then the PC-V? I don't have the bucks to do it all at once, so I'm havin' to take it a step at a time and I'm not sure what order to do these things in.
Suggestions?
So I'm wondering...
I'm planning on a K&N filter and the V&H Big Radius 2-into-2 pipes for my '07 Dyna. I know the retro PC-V will benifit me after the mods, but I'm wondering about installing it before the mods. Would I see any gain there as I did on my Corvette? I know they're two different animals, but I still think it's a valid question and to some limited extent a fair compairson, and since Fuelmoto will make adjustmens to the module to accomodate future mods, that opens up my options.
Or should I do the mods first, and then the PC-V? I don't have the bucks to do it all at once, so I'm havin' to take it a step at a time and I'm not sure what order to do these things in.
Suggestions?
Ultimate HDF Member
Joined: Dec 2007
Posts: 9,254
Likes: 283
From: Lake City, Florida (Native)
If can't do them but one at a time .. Would go PC V, High Flow Intake , then Exhaust in that order .. Although is nice to do them all at once and do the final tune and be done ..
Club Member
Joined: Feb 2007
Posts: 4,892
Likes: 2
From: DUNDALK,MARYLAND
Road Warrior
Joined: Dec 2006
Posts: 1,548
Likes: 163
From: Mt. Airy, MD
here's my .02, brought to you free of charge and worth every penny it cost you...lol
because of EPA restrictions and the overly lean condition of stock bikes, there's probably a miniscule amt of benefit to be had by installing a pc by itself. but we're talking so much lower potential from the v twin engine vs the vette engine that any small percentage points of gain would be nearly impossible to measure and definately not worth the investment.
your engine is an air pump. opening either end by installing new a/c OR a new exhaust will not yield any results, because the restriction still exists either in the intake or the exhaust which will restrict the pump from increasing output. only by installing the a/c in conjunction with a free flowing exhaust will you see an increase in the air pump's (the engine's) output. this is when the PC comes into play to correct the air/fuel ratio to compensate for the leaner mixture which is the result of more air in the system.
As a result, I would add a nice exhaust first, to get the sound (but no hp gains), then save my $ and do the a/c and the pc at the same time to get the benefits from the entire stage 1.
because of EPA restrictions and the overly lean condition of stock bikes, there's probably a miniscule amt of benefit to be had by installing a pc by itself. but we're talking so much lower potential from the v twin engine vs the vette engine that any small percentage points of gain would be nearly impossible to measure and definately not worth the investment.
your engine is an air pump. opening either end by installing new a/c OR a new exhaust will not yield any results, because the restriction still exists either in the intake or the exhaust which will restrict the pump from increasing output. only by installing the a/c in conjunction with a free flowing exhaust will you see an increase in the air pump's (the engine's) output. this is when the PC comes into play to correct the air/fuel ratio to compensate for the leaner mixture which is the result of more air in the system.
As a result, I would add a nice exhaust first, to get the sound (but no hp gains), then save my $ and do the a/c and the pc at the same time to get the benefits from the entire stage 1.
Road Captain
Joined: Jun 2009
Posts: 539
Likes: 7
From: Colorado
here's my .02, brought to you free of charge and worth every penny it cost you...lol
because of EPA restrictions and the overly lean condition of stock bikes, there's probably a miniscule amt of benefit to be had by installing a pc by itself. but we're talking so much lower potential from the v twin engine vs the vette engine that any small percentage points of gain would be nearly impossible to measure and definately not worth the investment.
your engine is an air pump. opening either end by installing new a/c OR a new exhaust will not yield any results, because the restriction still exists either in the intake or the exhaust which will restrict the pump from increasing output. only by installing the a/c in conjunction with a free flowing exhaust will you see an increase in the air pump's (the engine's) output. this is when the PC comes into play to correct the air/fuel ratio to compensate for the leaner mixture which is the result of more air in the system.
As a result, I would add a nice exhaust first, to get the sound (but no hp gains), then save my $ and do the a/c and the pc at the same time to get the benefits from the entire stage 1.
because of EPA restrictions and the overly lean condition of stock bikes, there's probably a miniscule amt of benefit to be had by installing a pc by itself. but we're talking so much lower potential from the v twin engine vs the vette engine that any small percentage points of gain would be nearly impossible to measure and definately not worth the investment.
your engine is an air pump. opening either end by installing new a/c OR a new exhaust will not yield any results, because the restriction still exists either in the intake or the exhaust which will restrict the pump from increasing output. only by installing the a/c in conjunction with a free flowing exhaust will you see an increase in the air pump's (the engine's) output. this is when the PC comes into play to correct the air/fuel ratio to compensate for the leaner mixture which is the result of more air in the system.
As a result, I would add a nice exhaust first, to get the sound (but no hp gains), then save my $ and do the a/c and the pc at the same time to get the benefits from the entire stage 1.
Tourer
Joined: Nov 2008
Posts: 364
Likes: 0
From: poughkeepsie, ny
I would do the PC first. These bikes run lean do to EPA regs. With the bike in stock trim (intake/exhaust) you are going to benefit in richening up the A/F ratio. The bike will run cooler and better. A canned mapped from Fuel Moto should do fine. Down the road when you can do the intake and exhaust, you should also save your pennies for a custom map if you want your bike running in top form.
Trending Topics
Tourer
Joined: Jan 2009
Posts: 426
Likes: 0
From: The Great State of TEXAS!!!
A quick question about the PC-V, I undersatand the tuneing of the A/F ratio and making the bike run better especially with a stage 1 done but, I was wondering if this will also improve fuel milage? Thanks, and I don't mean to hijack this thread.--Troy
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Thread Starter
|
Cruiser
Joined: Jul 2008
Posts: 146
Likes: 1
From: Houston, TX
Ultimate HDF Member
Joined: Nov 2009
Posts: 7,079
Likes: 21
From: Queens, NY
yeah slip ons opens up the exhaust of the bike.
stock mufflers come with restrictive baffles, so once you go to a less restrictive muffler the bike exhausts more freely.
i did my pipes first, then my A/C and pcv at the same time this winter.
like someone said before, you won't see power increasees with just the pcv, but the bike will richen up and run cooler.
eventualy when you do your a/c you can get a custom map for your set up or dyno tune the bike and have it running optimally.
stock mufflers come with restrictive baffles, so once you go to a less restrictive muffler the bike exhausts more freely.
i did my pipes first, then my A/C and pcv at the same time this winter.
like someone said before, you won't see power increasees with just the pcv, but the bike will richen up and run cooler.
eventualy when you do your a/c you can get a custom map for your set up or dyno tune the bike and have it running optimally.