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Discussion Starter · #1 ·
just had the dealer install and am not very happy...last bike was a 750 ace with v and h cruizers (no baffles in) sounded GREAT with no popping i understand the fuel pack is near dummy proof and i thought it was supposed to eliminate all the popping....anyone have similar experience?
 

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if you do not get rid of the pair you will still have popping and who is to say they got the exhaust sealed?
and what is a fuel pack??
 

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v & h big shots and fuel pack

Johnnycheese said:
if you do not get rid of the pair you will still have popping and who is to say they got the exhaust sealed?
and what is a fuel pack??
Johnnycheese,

The Fuel Pack is nothing more than V&H version of an add-on fuel manager. It cannot subtract fuel, only add it. It is marketed as an "exclusive" device for use with V&H pipe systems. It uses a 4 digit 'mode and code' sequence. You get a manual with it that describes the 'set-up' you have and then you simply punch in the associated mode and code numbers.

It is described as follows: Throttle position sensor-based, Enables you to fine-tune the fuel mixture throught out the entire rpm range with the touch of a button, Increases power and throttle response, No computer or software is required, simply punch in the values supplied with the fuel pack, Is a simple 'plug and play' installation, Values supplied are for use with V&H exhaust systems, Does require the use of a high-performance air filter.

They retail for about $279.00 through Parts Unlimited. Have not yet sold or installed one, I always try to sell the B&B 'closed loop' system instead.

Taz
 

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Taz-man

The V&H Fuel Pack does claim to remove fuel and has been verified on EFI HDs. The VTX version may not and V&H has not returned my email regarding their claim and the VTX.

Do you know for certain by using a dyno with A/F readings that the Fuel Pack cannot remove fuel on a VTX? They also offer "maps" for other brands of pipes. They even state that on their site so i dont think it is exclusive.
 

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vance & hines big shot + fuel pack

Johnnycheese said:
are you sure the B&B closeloop adds fuel??? I bet it doesn't
Yes, the B&B will add and subtract fuel as needed to maintain a near optimal a/f ratio without any adjustment. There has been much discussion on this board and others about the performance of the B&B fuel module.

Taz
 

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And yet I haven't seen proof. like an independant test.
Remember the HPP claimed the same thing and it did NOT add fuel only leaned to 14.7:1 if you were leaner than this it did not richen anything up.
 

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Pair valve removal took care of the popping for me plus it makes the X sound much better.
 

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Discussion Starter · #10 ·
o.k. now we're getting somewhere....just not sure where yet....what is (are?) the pair valve(s)?...and how complicated of a procedure is it? sorry for being ignorant...just never had to deal with this before..thanks for all help being given!!!....shadow
 

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shadow16508 said:
o.k. now we're getting somewhere....just not sure where yet....what is (are?) the pair valve(s)?...and how complicated of a procedure is it? sorry for being ignorant...just never had to deal with this before..thanks for all help being given!!!....shadow
They are little reed type plates on the heads that allow fresh air into the exhaust. This helps burn un burnt fuel for emmissions. It also causes popping on many aftermarket exhausts and is very noticable on drag pipes with no baffles.

Most also agree it makes the exhaust sound better even if you are not getting bad decel popping. This happens even with the stock exhaust you just cant hear the popping.

You can buy the block off plates thru HDL or Big Larry pretty cheap.
 

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Ive got a 2004 R, with a PCIII V&H Big Shots, and K&N filter. I do not know what map the bike is running, the PCIII as it was installed when I bought the bike. All is great except for the decel popping. So I did the Pair valves and the desmog. Still have popping. I pulled the block off plates to check for leaks and resealed them. I made sure everything was plugged according to instructions again too. I loosened the Pipes enough to make sure there were indeed gaskets, added spacers to the exhaust bolts to make sure the cap nuts were not bottomed out before the pipes were tight and then re-torqued them. Still have bad decel popping... I went through downtown Rochester the other night and half expected the gun shot detectors to go off.

Any other causes for this?

Should I replace the Exhaust gaskets to see if that is the problem?

Or is it just something we live with?

The bike has 4300 miles on it.
Thanks
 

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Bonecarver said:
Ive got a 2004 R, with a PCIII V&H Big Shots, and K&N filter. I do not know what map the bike is running, the PCIII as it was installed when I bought the bike. All is great except for the decel popping. So I did the Pair valves and the desmog. Still have popping. I pulled the block off plates to check for leaks and resealed them. I made sure everything was plugged according to instructions again too. I loosened the Pipes enough to make sure there were indeed gaskets, added spacers to the exhaust bolts to make sure the cap nuts were not bottomed out before the pipes were tight and then re-torqued them. Still have bad decel popping... I went through downtown Rochester the other night and half expected the gun shot detectors to go off.

Any other causes for this?

Should I replace the Exhaust gaskets to see if that is the problem?

Or is it just something we live with?

The bike has 4300 miles on it.
Thanks
Thats the first thing I would do. Your getting air from somewhere. On the bikes I have done it stopped all the decel popping.
 

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Bonecarver said:
Ive got a 2004 R, with a PCIII Any other causes for this?
couple things:

1. popping is normal, backfire is not ... if you just have a loud
rumble and pop-pop-pop-pop its fine ... if its pop-pop BANG
then you have a problem.

2. you can download the map off the pclll and open it up and
take a look at the '0' values ... this is when the bike is basically
idling or you have just shut the throttle -- those values can be
changed slightly so the bike isn't as lean when you close the
throttle.
 

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Thanks Guys

I am going to the dealer to pick up new gaskets in the morning and in the mean time I guess it is time for a lesson in the PCIII. I have been putting that off. I guess I will go get it and hook it up to the computer and see what's what.
Besides it's raining, so I might as well break something...

OH and it is just the POP noise not really back firing.

Curt
 

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Bonecarver said:
Thanks Guys

I am going to the dealer to pick up new gaskets in the morning and in the mean time I guess it is time for a lesson in the PCIII. I have been putting that off. I guess I will go get it and hook it up to the computer and see what's what.
Besides it's raining, so I might as well break something...

OH and it is just the POP noise not really back firing.

Curt
if it is just popping then that is absolutely normal!

every engine does it and always will ... its the big gunshot
BANGS that are a concern ...
 

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I have noticed that in the morning leaving for work the decel popping is not as bad when I first off. I do not know if the reason for this is a little extra fuel while the bike is warming up, or if it is due to no air leaks till things are hot and expanded.

Also if I give a slight amount of throttle when slowing rather then just closing the throttle the decel popping is not as bad either, which leads back to a too lean condition and a high then normal state of confusion..

I have the laptop out in the garage hooked up to the bike, and just installed the PCIII software and downloaded the map that is currently loaded. I may try a couple of other maps from Bare's site to see what happens. there a couple from bikes set up similar to mine...


Thanks for all input..
 

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Well,
After I eat I will go for a ride with a new map. The one that was in the bike said in the notes it was for a stock setup. No after market pipes or intake.

So I grabbed a map from the powercommader site that was for my set up. Huge difference in the maps. I have it loaded now.. Will report back.
 

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MAN! what a huge huge improvement. Decel pop from all speeds 70+mph on down is not noticeable any longer. I get a little when down shifting into lower gears, but I would not want to get rid of it even if I could.

So I am thinking the problem was due to lean conditions and new map took care of it.. Happy camper or a biker !
Thanks Guys!
 
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