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Thread: Tuning or not after installing slip ons?

  1. #11
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    Re: Tuning or not after installing slip ons?

    Quote Originally Posted by Dazzlin View Post
    If you go down the V&H route, speak to your dealer and they can probably flash the ECU with a Map to suit and therefore maintaining your Warranty.

    Also, if you fit slip-ons, declare it on your insurance to ensure they are covered, should you every have a spill. It's normally free as they are generally only concerened with engine mods that enhance performance greater than 5% and slip-ons will be nowhere near that.
    Thanks, I wasn't aware that the dealer would do that. I wasn't going to go down the dealer route as I'm sure they'll charge an arm and a leg to fit them but it might be worth enquiring.

    Yeah, I'd always declare it with the insurance

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    Re: Tuning or not after installing slip ons?

    Quote Originally Posted by snerkler View Post
    I think I'm not going to 'mess' too much whilst the bike's under warranty. I'm not bothered about performance enhancements I just want it to sound better, as long as the exhaust system doesn't completely discolour and look awful ........ In an 'ideal' world I would have it tuned to run better, but after forking out for the bike I don't have a lot of funds available, plus I'm not wanting to lose warranty hence me now deciding to put a tune on the back burner for now.
    I understand warranty nerves. Mine is still under warranty. It's all about having your bike run right but without compromising your ability to go back to the dealer if something happens.

    At the very least, talk to your dealer first and try to buy non-Harley slip-ons through them. That can calm your fears.

    But unless the dealer has a rolling road dyno, that dealer will never be able to get the bike to run right with any add-ons/upgrades.

    EXAMPLE: the dealer I bought my bike from, 250 miles from home, was happy to supply V&H catless header pipes, S&S air intake and slip-ons and Dyno Jet Power Vision tune along with H-D Stage 2 torque cam. And all with no adverse effect on warranty.

    "We can't offer decent Harley-brand tuning upgrades now, no issue.'' They ''tuned'' it for me pre-delivery, basically by guesswork looking at the parts and choosing one of a selection of stock PV maps.

    Fast-forward 5000 miles to a nearby dealer who services my 2019 RG (until my warranty runs out, I share your caution, first time a bike of mine has been in a dealer workshop in over 20 years).

    'Your bike doesn't run anywhere near as good as it should with those mods, Dave. Give it to our PowerVision-trained head tech to put on our rolling road''.

    The difference after a 3hrs with the expert tuner on a rolling road? Night and day. NIGHT and DAY.

    Jackpot: H-D dealership with rolling road and Dynojet PV trained staff. He adjusted all the intricate settings that the selling dealer staff did not know how to touch.

    Yes it ran ''OK'' for the first 5000 miles, but I knew no better coming off a 39yr-old Shovelhead. Now it runs as it really should.

    Whomp! Huge acceleration off the line and in lower gears, bags more torque, full of power, still, in 5th and 6th, blah blah. I have the dyno sheet that proves the stark difference before and after correct tuning.

    Get it properly tuned as soon as you can. For the longevity of your engine. Maybe there's a dealer around you who offers what I got down here. Or bite the bullet and go to the aftermarket guy.

    PS: no blue discolouration will ruin the look of your bike. When blue or straw-coloured exhausts began to offend the new age of H-D rider, the factory added cover-up ''heat shields'' to the bikes. So your ''chrome pipes'' will always appear to be unblemished chrome.

    I liked the blue, myself.

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    Re: Tuning or not after installing slip ons?

    Quote Originally Posted by kiwidave View Post
    I understand warranty nerves. Mine is still under warranty. It's all about having your bike run right but without compromising your ability to go back to the dealer if something happens.

    At the very least, talk to your dealer first and try to buy non-Harley slip-ons through them. That can calm your fears.

    But unless the dealer has a rolling road dyno, that dealer will never be able to get the bike to run right with any add-ons/upgrades.

    EXAMPLE: the dealer I bought my bike from, 250 miles from home, was happy to supply V&H catless header pipes, S&S air intake and slip-ons and Dyno Jet Power Vision tune along with H-D Stage 2 torque cam. And all with no adverse effect on warranty.

    "We can't offer decent Harley-brand tuning upgrades now, no issue.'' They ''tuned'' it for me pre-delivery, basically by guesswork looking at the parts and choosing one of a selection of stock PV maps.

    Fast-forward 5000 miles to a nearby dealer who services my 2019 RG (until my warranty runs out, I share your caution, first time a bike of mine has been in a dealer workshop in over 20 years).

    'Your bike doesn't run anywhere near as good as it should with those mods, Dave. Give it to our PowerVision-trained head tech to put on our rolling road''.

    The difference after a 3hrs with the expert tuner on a rolling road? Night and day. NIGHT and DAY.

    Jackpot: H-D dealership with rolling road and Dynojet PV trained staff. He adjusted all the intricate settings that the selling dealer staff did not know how to touch.

    Yes it ran ''OK'' for the first 5000 miles, but I knew no better coming off a 39yr-old Shovelhead. Now it runs as it really should.

    Whomp! Huge acceleration off the line and in lower gears, bags more torque, full of power, still, in 5th and 6th, blah blah. I have the dyno sheet that proves the stark difference before and after correct tuning.

    Get it properly tuned as soon as you can. For the longevity of your engine. Maybe there's a dealer around you who offers what I got down here. Or bite the bullet and go to the aftermarket guy.

    PS: no blue discolouration will ruin the look of your bike. When blue or straw-coloured exhausts began to offend the new age of H-D rider, the factory added cover-up ''heat shields'' to the bikes. So your ''chrome pipes'' will always appear to be unblemished chrome.

    I liked the blue, myself.
    Thanks very much for your post. Since my last post I've actually had V&H Twin Slash installed and prior to doing so I had a long discussion with my dealership and they advised me that technically even slip ons could void warranty (other than the HD recommended Screamin Eagles) BUT obviously as a dealership they want returning custom and would not leave me high and dry if you get my gist.

    As far as tuning etc is concerned I think it is something that I will look at, but at the moment I'm brassic so will have to wait. Plus, my main priority is sorting the screen buffeting and noise, over 60mph it's getting unbearable and that's wearing ear plugs, sometimes it's a pain being tall ;)

    Back onto tuning etc, I don't want to start going down full systems etc as the sound level with the Twin Slash slip ons is just about right for me. Loud enough for me to hear whilst riding but not to the point the sound gets tiring, or causes people to turn and stare.

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    Re: Tuning or not after installing slip ons?

    You're on the right track....the stock screen was just about the first thing I literally placed in the dealer's rubbish bin. Look at Freedom Shields.

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    Re: Tuning or not after installing slip ons?

    Quote Originally Posted by kiwidave View Post
    You're on the right track....the stock screen was just about the first thing I literally placed in the dealer's rubbish bin. Look at Freedom Shields.
    Freedom shields and Klock Werks are the two I’m looking at, but I can’t find a U.K. stockist and shipping plus tax from the US isn’t cheap. I’m contemplating trying the MRA VSA-TYP B spoiler for now. It’ll look pants but should give me an idea whether a couple of inches extra height is going to solve it. I’ve tried all the tests of putting my hand in different positions around the tank to see if fork deflectors might help but it made no difference.

    I’ve even thought about going the other way and trying a shorty screen, thinking that the main turbulence might be more chest height than head height and so reducing the noise. In terms of noise having no screen is better, but of course you feel like you’re being pushed backwards.

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    Re: Tuning or not after installing slip ons?

    Toby wait and get the screen you want dont jump in and buy a product that may do the job but looks pants and you will tire of the shite look so bide your time and save for the right one

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    Re: Tuning or not after installing slip ons?

    Quote Originally Posted by Army View Post
    Toby wait and get the screen you want dont jump in and buy a product that may do the job but looks pants and you will tire of the shite look so bide your time and save for the right one
    My thoughts are that I'd try that first to see if it helps. I'd then sell on eBay and reckon I'd lose out on £30 tops. IMO this is better than shelling out £250 on a screen that doesn't solve the issue. That's my current thinking anyway ;)

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    Re: Tuning or not after installing slip ons?

    What bike is the screen for ?

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    Re: Tuning or not after installing slip ons?

    Quote Originally Posted by Halal Tim View Post
    What bike is the screen for ?
    Road king.

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    Re: Tuning or not after installing slip ons?

    Bugger. I have one for a glide you could have tried , but no good for a king. Is there anyone local to you that could lend you one? Before you shell out?

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