Posts by Dave@DDMWorks

Quote from Kyle D

I emailed you back Adam but will respond here also. I have had 2 Slings with the welter duals in the shop. The first one was fine but I am guessing it was the 2". I did not check the size. The other Sling we have in the shop currently does have the 2.5" and we did have to clearance the pipe running past the brace to make it fit. I have brought this up to the fab guys to see if we can modify the brace for the next run.

Kyle D - I think you may find it hard to clear some of those exhausts from Welter as the fitment of the Welter rear exhaust has changed several times during production along with the way that the exhaust mounts in the back. So your design might be able to fit some 2.5" Welters and not clear others.

took the 2020 out today for a little Home Depot run.

Quote from SlingSC

rabtech I really like those Dave@DDMWorks fender Vents you have installed. How hard is it to cut the hole out for the vents or better yet how long does it take to get the courage up to cut them? 😳

I have been using a 1/4” drill bit in a cordless drill and it takes about 1-2 minutes to cut each side, pretty easy actually. It surprised me the first time I did our hood how easy it was.

Welcome to the best slingshot forum out there with some fantastic members. Lots of great information here, looking forward to seeing how you enjoy your new ride!

Same thing here, I thought I was special

We just got the call that Maggie Valley cancelled our rental cabin for the original dates, just FYI

Quote from Rob the Slob

Dave@DDMWorks can you help the brother out?

Sure, happy to help -

That is quite a diverse collection of vehicles, stopping for gas must be crazy, it's hard enough here with just one slingshot the questions we get while filling up, let alone with those 3 at one place!

Really want to get out and drive one of those T-rex's, seem like they could be fun.

Glad you could get out and ride! Stay safe out there!

Out for a Sunday drive, breaking in the new 2020, getting baseline 0-60, 1/4 mile and brake testing done, beautiful day!

Quote from SlingLow

Dave@DDMWorks can you speak to how your latest tune(s) work with the Pedal Commander/Pedal Max products? When you talk about throttle body/pedal correlation it makes me wonder if one negates the need, or effectiveness of the other. Or,once you have the tune, does the Pedal Commander still work as advertised, speeding up the opening of the throttle body with the inherent benefits of both?

The pedal commander and Pedalmax both kinda do the same thing, just in different ways, but basically they just skew the pedal position signal to the ECM and then the ECM opens the throttle based on the lookup table in the tune. Either of them are going to work with a turbo or supercharger, but since there is no power gained by installing either of those devices, I am not sure why you would want to do it on either boosted application. Like Ghost mentioned, for drag racing or something of the like, limited resolution of the throttle may work out to be faster, but when going around turns and trying to modulate the power a more linear power response with greater resolution offers the best way of controlling the power to the rear wheel. So, to hopefully answer your question, the pedal commander and pedalmax will both still work as advertised on one of our tuned ECM's, although since the throttle tables in our tunes are more linear, the response with the pedal commander and pedalmax should be more linear also.

Hope that helps,

Dave

Quote from wickedwebby

Rob and Ghost,

Cool! Any other engine upgrades besides the bolt-on stuff required for the 100mm??

Any noticable pinging in the heat?

Any changes to your ECU from the original tune for the DDM Rotrex SC?

Thanks,

WW

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We have tested the 100mm quite a bit and we have a lot of track time with that setup on our Slingshot.

Here is a video of the 100mm at Roebling road with Zach driving it a couple years ago -

We keep spending a lot of time on the drivability of the tunes, once the main full throttle power is dialed in for timing and fueling, the drivability part of the tune is where most people really tell the difference. There was a lot of time spent over the last year on the throttle pedal to throttle body correlation and making changes to smooth those transitions and make everything smooth and as OEM feeling as we can, although I am sure we will keep working on it and making it better every year, its what we do

All that being said, the 95mm cam setup is my absolute favorite setup for our Slingshot, really smooth power that just keeps pulling all the way to redline. If we had to chose just one setup, that would be it for sure.

Let me know if you have any questions about it,

Dave

Quote from wokka

Dave, you are kinda quiet in the explanation, might want to back off the music on the mix a bit. Great video otherwise!

Yeah, I noticed that when I uploaded it also, thanks for the feedback though

Just getting a bunch of questions asking what does the Welter Duals sound like with the Stage 1 Turbo kit, so why not make a video

Quote from Phantomx

Don’t forget Polaris has been building there own engines for years in all there other vehicles, OHV’s, Victory bike engines, Indian bike engines high performance off roaders, etc. The Razr is built for abuse and seems to be doing well with a 200hp turbo engine in it. I don’t think this is a stretch for them.

Yeap, and this engine has been out in the real world testing for almost 3 years now from what we were told. They were actually going to introduce it last year, but had some supplier issues, which gave them another year of testing on that engine. We are pretty confident it will hold up to superchargers and turbos also from a couple little birdies we have talked with Our 2020 is on the way here as I type this and we will for sure see what the engine will take

Quote from wokka

Glad I got one with WP on it

Collectors items now I need to go check in the back, we might have some of those stickers since sometimes customers didn't want them put on, I know we have some of the new twist stickers for sure.

Quote from OrangeSlingFL

Lol no worries! The only thing you can’t trust this forum for is saving you money! Quick question, i’ve noticed that some Exhausts have the side WP decals in red/white on the tips while others (like yours) do not. Do they come with the decals included in the package as optional ? Would really like to add the decals on the tips. See this pic

Quote from wokka

They are optional and come with them new. If you don't have them, I'd expect Welter/TD to send you some, it's free advertising for them.

Did you go with the 2 inch or 2.5 inch exhaust? The 2 is easier to install, no transmission mount fun. The hardest part of the install is getting it all routed down the tunnel correctly. The water pipe relocation plate is a bit tricky, it's hard to get in there to move it. Getting the old muffler out is challenging as well. I took my whole side off when I did mine, but Joey showed me that you can just remove the front half of the bolts, back to about the seat, and pry the side away enough to get the muffler out.

My advice, put a bit of lube on the pipes before inserting, makes it much easier to insert and move/adjust as needed. Don't put the clamps on until you get all of the pipes routed and where you want them, including the y-pipe.

I did my 2.5" install by myself, took about 8 hours, due to the learning curve. It was my 2nd big mod after I bought it, so was still learning the slingshot.

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Depending on the age of the exhaust, some have the "WP" logo and the newer sets have a twist logo sticker.

Quote from wokka

Cool, take all the time you need!

I left with the powdercoat cooling and will have pics in the morning

Quote from wokka

And it's a really big tease when he gets busy and doesn't email you

Had to finish the powdercoat before taking pictures for you

Quote from wokka

Dave@DDMWorks did you build these so that the adjustments can go at the top for the front, so we can adjust them a bit easier?

The 3 way coilovers could not be installed inverted because the springs interfere with the installation, I didn't try inverting these, but it might work as the lower mounts are slightly different on the 4 ways, I will try that out. Also, I have an email coming your way later today

Quote from Rob the Slob

Well there you go Dave@DDMWorks . Giving us another mod to spend our money. They sure do look nice. I would like to check them out the next time we see you with your sling. If you need anyone to test them out down here on the rough ass roads feel free to send them here and I will show them off for you.

With these coil overs giving us all the adjustments kinda reminds me of all the selections I have on the dirt late model.

The amount of adjustment on those trailing arms is amazing with that lower front mount being adjustable and also having an adjustable mount.