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MrIQR · Apr 7, 2017

I have 15 155" BD racegas turbo, av @ 10lbs, 19/42t, green pink, I'd have to double check weights and primary but it is a dog on the bottom end IMO.

Is that just the nature of the beast with a turbo? This is my first turbo. My last pro was snappy, stock with can, 19/45t, green pink, 58g. My Iqr800 crank shop built mod blows the doors off it out of the hole and for first 25yards or so.

I'm thinking going to a 44t or 46t on bottom.

Should I be looking into grabbing some different helix also?

The riding I like is all about short burst of wfo, very rare to be wfo for more then 3-4 seconds unless it's super deep.

Toad face killah · Apr 7, 2017

I don't have a turbo and I'm pretty sure the reason you are describing is why. Turbos don't have the same bottom end, they have lag, and that is a big drawback in my opinion of why more people don't go get a turbo. I don't want turbo lag in the trees like I ride. I Realize people say the lag is non existent but Ive had first hand report experiences as well as reports from buddies

I wish you well in finding a better setup to reduce the lag

Spaarky · Apr 8, 2017

You should have better then stock bottom end. I do. Zero lag, I will argue it all day long with Toads buddys.

Find the first TRS Turbo clutching thread. Put in Tony's set up. If you can't find Lightning weights. Call Indy Specialties and have Jon sell you their turbo set up. It's the next best thing.

Next you say race gas set up. Give me more detail. What are you running for fuel mix? Turbo? Ect...

Also you may want to consider a reflash of your BD box and possibly your ecu depending on what you want to spend.

Spaarky · Apr 8, 2017

Watch this and tell me there is lag. Tory has some better vids of his sled, but it's only one I could find.

https://m.youtube.com/watch?v=FLODiV0Ba2A

Coldestwinter1 · Apr 8, 2017

I bet your clutching is pretty heavy to compensate for the 10# I'd back down the boost a little and lighten up the clutch

diamonddave · Apr 8, 2017

Spaarky said:
You should have better then stock bottom end. I do. Zero lag, I will argue it all day long with Toads buddys.

Find the first TRS Turbo clutching thread. Put in Tony's set up. If you can't find Lightning weights. Call Indy Specialties and have Jon sell you their turbo set up. It's the next best thing.

Next you say race gas set up. Give me more detail. What are you running for fuel mix? Turbo? Ect...

Also you may want to consider a reflash of your BD box and possibly your ecu depending on what you want to spend.

I agree completely. I read about lag and wonder what the he!! people are talking about. My sled, sleds I've tuned, worked on, and ridden, etc. you wouldn't know they had a turbo on them until they build boost.

MrIQR · Apr 8, 2017

Spaarky said:
You should have better then stock bottom end. I do. Zero lag, I will argue it all day long with Toads buddys.

Find the first TRS Turbo clutching thread. Put in Tony's set up. If you can't find Lightning weights. Call Indy Specialties and have Jon sell you their turbo set up. It's the next best thing.

Next you say race gas set up. Give me more detail. What are you running for fuel mix? Turbo? Ect...

Also you may want to consider a reflash of your BD box and possibly your ecu depending on what you want to spend.

I've read some of it and from what I remember he uses tall gearing that would never work where I like to ride so I wrote off the clutching.

15' pro is vohk built boondocker, aux injectors, timing key, I forget the turbo would have to look, straight av, trying to think what else..

I'm going to be putting a new crank and cases(snapped the primary off) in it next week so I'd figured I'd make some changes while I'm at it.

Spaarky · Apr 8, 2017

Tall gearing? Where do you ride? What do you want to run for final ratio? What elevation you ride?

How many lbs of boost? What fuel mixture is the fuel controller set up for??

w2bridin · Apr 9, 2017

MrIQR said:
I have 15 155" BD racegas turbo, av @ 10lbs, 19/42t, green pink, I'd have to double check weights and primary but it is a dog on the bottom end IMO.

Is that just the nature of the beast with a turbo? This is my first turbo. My last pro was snappy, stock with can, 19/45t, green pink, 58g. My Iqr800 crank shop built mod blows the doors off it out of the hole and for first 25yards or so.

I'm thinking going to a 44t or 46t on bottom.

Should I be looking into grabbing some different helix also?

The riding I like is all about short burst of wfo, very rare to be wfo for more then 3-4 seconds unless it's super deep.

So it looks like you are running 100% av gas which hurts your bottom end. If you want quicker response turn the boost down so you can run mostly premium gas and lighter weights and your bottom end will get much better. I would try that before gearing down because turbos like taller gearing imo. I also turned my boost up to 10psi for a while which is fun for the occasional open hill but I ended up turning it back down to 7 because I hated the sluggish feeling of heavier weights and added octane.

xpspenziv · Apr 9, 2017

More boost+ more weight= more time to build RPM.

You want more boost? Well its going take more weight to keep rpms down. Sluggish, lazy throttle response is what you will have. With more power and lower final drive ratio you wont be in the torque curve very long. You will run out of gear cause the motor is maxed out. You used up all the power already. 0.02

diamonddave · Apr 9, 2017

I run 100% Av, no issues here.

I'm going to guess you're running the stock 8 tooth drivers with those 19/42 gears?

Yeah, you need to throw a 45 or 46 tooth sprocket at that thing.

What helix and spring are you running now.

Ricks 32 · Apr 10, 2017

Have you checked your reeds? I've had BD turbo's since 2013 and all of them have been set at 12 lbs and I can assure you that when setup correctly, there isn't any lag. I haven't ever had a reed go bad in any of my Pro's or Axys, but broken reeds were common on my Cat's and the bottom end would fall on it's face.

I'd give Vohk or BD a call and have them help you with your settings. Check the reed's too. The 2013 - 2015 BD race turbo's were dialed! That sled should be riding wheelies everywhere you want.

Good luck

doudea · Apr 10, 2017

A supercharger set up is the answer for bottom end and still have stupid power at the top end. IMHO

The cat supercherger set-ups are boosting at something like 3 lbs berfore engagement. Plus its a liner power band, so clutching should be much less dynamic than with a turbo. I know some will say that a supercharger takes power away, and that is correct. However when your talking this much power I dont think the top end will be an issue at all.

PS. Ive been running turbos for 7 seasons now, and love them. I just think that superchargers are the answer. Just hope we see one for the axys soon?

doudea · Apr 10, 2017

A supercharger set up is the answer for bottom end and still have stupid power at the top end. IMHO

The cat supercherger set-ups are boosting at something like 3 lbs berfore engagement. Plus its a liner power band, so clutching should be much less dynamic than with a turbo. I know some will say that a supercharger takes power away, and that is correct. However when your talking this much power I dont think the top end will be an issue at all.

PS. Ive been running turbos for 7 seasons now, and love them. I just think that superchargers are the answer. Just hope we see one for the axys soon?

MrIQR · Apr 24, 2017

diamonddave said:
I run 100% Av, no issues here.

I'm going to guess you're running the stock 8 tooth drivers with those 19/42 gears?

Yeah, you need to throw a 45 or 46 tooth sprocket at that thing.

What helix and spring are you running now.

I run 10lbs, normally 6-8k, with 19-42 gearing. I had 19-45 on my old n/a pro and it worked great. I ride trees.

I'd have to look and see what helix I have in, too many machines too remember.

MrIQR · Apr 24, 2017

Ricks 32 said:
Have you checked your reeds? I've had BD turbo's since 2013 and all of them have been set at 12 lbs and I can assure you that when setup correctly, there isn't any lag. I haven't ever had a reed go bad in any of my Pro's or Axys, but broken reeds were common on my Cat's and the bottom end would fall on it's face.

I'd give Vohk or BD a call and have them help you with your settings. Check the reed's too. The 2013 - 2015 BD race turbo's were dialed! That sled should be riding wheelies everywhere you want.

Good luck

Reeds were replaced 400 miles ago when i did a top end, the ones I took out looked good.

snowcheck163 · May 8, 2017

I'm new and inexperienced as others. But could you do a heavier spring with lighter weights? Keeping the higher boost but changing how/when the clutch engages? I run 7lbs and 70g weights. Stock clutches other wise. (I know it's probably not wise but 1 full season with no issues) and I don't have really any noticeable lag. Tree Ridding at 6-9000ft. 15 pro 163.

Stroker Customs · Jun 13, 2017

Zero lag on turbo? Ok if you say so, not one video is ever posted showing a turbos true lag. On/off throttle or in and out of boost is not the same as turbo lag. Let's see from a dead stop at idle to full throttle to determine lag. Some kits are better than others but to place a restriction in the system at idle vs no restriction and claim it's better than the no restriction doesn't make sense &#55358;&#56596; Not to mention your incoming air has to travel farther to get to the motor with less volume for a reserve.

aksledjunkie · Jun 13, 2017

Stroker Customs said:
Zero lag on turbo? Ok if you say so, not one video is ever posted showing a turbos true lag. On/off throttle or in and out of boost is not the same as turbo lag. Let's see from a dead stop at idle to full throttle to determine lag. Some kits are better than others but to place a restriction in the system at idle vs no restriction and claim it's better than the no restriction doesn't make sense �� Not to mention your incoming air has to travel farther to get to the motor with less volume for a reserve.

Tested this two last month actually. 3 sleds, all 3 axys 155".
1 Stock
1 Clutched with local A2DSledworks clutching
1 Silber Turbo with Indy Specialty clutching & running 5# of boost

I was expecting the middle guy with A2D's clutching to eat us alive but that wasn't the case. Out of a dig Turbo walked both of them. Tried this multiple times. Similar weight of riders too. We tried again and it was the same. Maybe with higher boost setups there is more lag but at 5# that's not the case. Also only running 77grams and with those T3 weights it just flat pulls your shoulder sockets apart.

Stroker Customs · Jun 13, 2017

I'm not saying there are not ways to combat lag. Like I said certain kits are better than others and a lot of variables come into play. However if a turbo had zero lag wouldn't we be able to clutch them with a stock primary spring? So to the OP you have to make sure you don't have a broken or sacked out primary spring, belt deflection, bad motor mounts, exhaust leak, boost leak, broken reed pedals, dirty primary clutch causing sticking, ect ect. You would be surprised what a hairline crack in the pipe under the heat shield would do. Lots and lots of variables that need to be confirmed before we can decide if that is true nature of the beast turbo lag. In my opinion Boondocker does have a little worse lag than a few others but we won't get into kit designs or a this kit is better than that kit. People say turbos are pull and go but they do require more maintenance to keep them running properly.

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