HP fuel filter bypass - SV1000 Portal
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post #1 of 33 (permalink) Old 10th June 2018, 05:57 AM Thread Starter
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HP fuel filter bypass

I just did the high pressure fuel filter bypass mod and am glad to say it worked flawlessly.
I had an issue where my bike would lose power around 6/7000 RPM.
I replaced the fuel pump and backwashed the sending unit/filter a few months ago because I was having fuel issues.
It worked for a while but then I started losing power in the upper RPMS.
I drilled through the hp filter housing to bypass it and installed an inline filter. I guess the power loss was gradual because now my bike feels like a brand new machine. It’s doing power wheelies in first at half throttle, and pulling harder the higher I take the revs. My bike is an 05 with over 50k miles so this was probably way over due, but if anyone is having similar issues with a loss of power in upper RPMS I recommend this mod.
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post #2 of 33 (permalink) Old 4th December 2019, 11:50 PM
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I have been considering doing this mod, and have read the V-Strom forum's write up on that....

The filters that are suggested for that work well, but tend to be a bit on the bulky side, especially for the SV.
The DL's seem to have a little more space....

I have been looking at some service manuals and came across the F4 MV Agusta fuel pump arrangement.
Now, please sit down, this will come as a shock, but the Italian's, (even more shocking, MV...) have got a far better system. Their pump has Mahle KL145 replaceable filter in it ....!!!!! Yes, amazing.....
And Cagiva used it on the Raptor 650 and 1000 which as we know was a Suzuki engine anyway....

Better still, the Mahle KL145 (or any direct equivelant) is only 50mm in diameter.......and the housing itself is only
58mm long (94mm including pipe tails)
I have only ever found short bodied filters with 55mm diameter, and 50mm diameter units have bodies that are a lot longer....

So, if i can find one at a decent price, bit expensive for what they are, i will go with the Mahle filter i think... used on other Euro bikes as well...

Other brands may be cheaper..... make sure it is a high pressure filter, as some of the x-refs i have seen are carby filters only, crimped body types (might be EFI ok at 43 PSI ? ).......the list below are all EFI as far as i know.....

Cross ref to
Filtron PS881
Mann Filter MWK44
Purolator F57123
UFI 3176000
Valeo 587013
Aprilia GU01106090
BMW 16142325859 or 13322305766 or 13321460453
Ducati 42440041A or 42540041B
Triumph 1240850

Thoughts out there ?
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File Type: jpg MV Fuel Pump.JPG (57.7 KB, 25 views)

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post #3 of 33 (permalink) Old 5th December 2019, 12:40 AM
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I've already done that modification with that exact filter. It works very well. Just make sure when you drill a hole into the filter housing you use brake cleaner or something similar to rinse out the filter first. No need to have all that gunk clog up the new external filter. I can attach pics of the fitment once I get home from work.
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post #4 of 33 (permalink) Old 5th December 2019, 04:41 AM
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Sounds good.....

Yeah, the old filter will get a good dose of carby clean in a container for a few hours.....

Good thing is, the new set-up can be changed for far less money than the OEM filter..

Look forward to the pics

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post #5 of 33 (permalink) Old 6th December 2019, 03:40 AM
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Sorry for the late post. I tried to get pictures that would demonstrate fitment. As you can see, it fits very nicely without kinking lines or obstructing movement of the surrounding parts.
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File Type: jpg IMG_20191205_163131_1575603498855.jpg (390.5 KB, 36 views)
File Type: jpg IMG_20191205_163214_1575603516834.jpg (380.7 KB, 34 views)
File Type: jpg IMG_20191205_163207_1575603533463.jpg (384.6 KB, 34 views)
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post #6 of 33 (permalink) Old 6th December 2019, 06:58 AM
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Thanks for the pics......looks good.... About the only thing it makes harder is getting to the TPS for adjusting, but, it isn't too bad thats for sure....
Easy to see that the shorter body makes it an easier set-up....

Just gotta find one here now...

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post #7 of 33 (permalink) Old 6th December 2019, 02:23 PM
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Quote:
Originally Posted by Missing Link View Post
Thanks for the pics......looks good.... About the only thing it makes harder is getting to the TPS for adjusting, but, it isn't too bad thats for sure....
Easy to see that the shorter body makes it an easier set-up....

Just gotta find one here now...
I'd use eBay. The filter was $14 with free shipping. Can't beat it considering if the stock filter ever goes out it'll cost around $700 for the whole pump assembly. This is an upgrade that's absolutely worth it.
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post #8 of 33 (permalink) Old 8th December 2019, 11:44 PM
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$14 ? Wow.... do you have the ebay item number, or the link to the item or seller?

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post #9 of 33 (permalink) Old 9th December 2019, 05:15 PM
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Quote:
Originally Posted by Missing Link View Post
$14 ? Wow.... do you have the ebay item number, or the link to the item or seller?
I bought a smaller filter its the WIX 33095. It's really small and should do the job but haven't tried it yet. I have a spare fuel pump assembly to experiment with the bypass this winter, bought quality 8mm hose and fi clamps and looking to buy a qood quick connect valve like this https://www.ebay.co.uk/itm/Quick-cou...y/332094001931

Will use this valve between the pump output and the external filter and secure the hose at both ends with clamps.

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post #10 of 33 (permalink) Old 10th December 2019, 02:45 AM
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I would be a bit dubious about using that WIX filter, it is recommended to fit cars that dont have fuel injection form what i can see.... might not be up to the job where 43psi is the system pressure.....

IF anyones got some clues there it would be helpful ?

That quick connect unit is good, but the existing couplings do the job fine, and when you need to replace the filter
the hoses need to be removed anyway....

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post #11 of 33 (permalink) Old 10th December 2019, 06:35 PM
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Do you have a link to the Vstrom thread? Curious what this bypass is about...I'm going to be replacing fuel lines on my '06 (apparently they didn't like sitting around for 13 years), is this a good time to make the mod? Do you have to access the tank internals?
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post #12 of 33 (permalink) Old 11th December 2019, 06:04 AM
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Quote:
Originally Posted by Masta' C View Post
Do you have a link to the Vstrom thread? Curious what this bypass is about...I'm going to be replacing fuel lines on my '06 (apparently they didn't like sitting around for 13 years), is this a good time to make the mod? Do you have to access the tank internals?
https://www.vstrom.info/Smf/index.php/topic,6105.0.html

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post #13 of 33 (permalink) Old 12th December 2019, 07:53 PM
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Interesting!

Is our fuel line 5/16"? If so, is this anything to consider? LINK

5/16" barbs, rated to 88 psi for EFI, 1" diameter, 10 micron washable bronze filter element and reasonable price!
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post #14 of 33 (permalink) Old 13th December 2019, 05:54 AM
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That filter is capable of 1.5 US gallons per minute.....way more than enough....

But is the 10 micron rating small enough for our bikes requirements ?

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post #15 of 33 (permalink) Old 13th December 2019, 06:35 AM
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I read a couple sources that said 10 micron is generally the standard for high performance fuel injection systems and that most non-performance systems may use up to 35 or even 40 micron.
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