Ideal tune for D&Ds & 3K&Ns

[Pig9r]

This is a good guide to follow. If you need help let me know and I'll put it together for you. Also make sure you don't have any exhaust leaks, that can cause it too.

 

[kcc11]

Well I finely installed the 3 K&N's and new plugs. No proplems getting the air ducting out or the new filters on. A few brain melt downs with Tuneboy and Windows 7 and me rushing things to get the tune loaded, but got it done. Was only able to ride for about 2 miles sunday night and I could tell that is was SO much better. The rain stopped and rode to work. What a BIG difference. The motor wants to rev up so much faster and easier. The power is smoother. It pulls hard in all the gears. Had it in 3rd and just nailed it and it just flew. I was going into 5th before I know it. Roll on at 50 mph in 5th is great. I did feel the power come on stonger above 3000 rpm's, but I think that will help with the MPG. Its like a new bike. I need to added alittle to the L tables to get the popping down. Too many car alarms around here. Next is the clutch. I'm not sure if is the clutch or the CT breaking loose??
Again I would like to thank everyone with their input and help with everything.

 

[IceFyre13th]

Stick with your tune and fatten it up where needed. The popping is due to a lean condition. A lot of modifications have been done on the L tables to increase fuel at low throttle position. You can get Brian's best and copy the L tables into your tune. (But you have to uncheck the O2 sensor box.).

Someone suggested solving this by trimming the 1st 2 rows of the F tables to 15% from about 1500 to 3000 rpm. Since the F tables aren't used at 0-5% throttle, this shouldn't do anything. However, this trim also adds 15% to the second row of the L tables. I'm using this now with the original L tables and it may be helping.

If you look at the PCIII trim for the D&D's you'll see values of 5-10% in the 1st two rows. When you apply this in TuneEdit, it's adding fuel to both the F and L tables. You could increase the PCIII trims in the 1st 2 rows and see what happens.

Question , where do I find Brian's Best?

Any chance of posting a screen shot of what you described, I think I understand what your saying, but a picture would help me.

Thanks a million!!!

 

[dougl]

Brian created some tunes with L tables modified to reduce popping. They used to be in the Tuneboy library. The tune Brian posted at the beginning of this thread may have modified L tables. I posted a tune for TORs/cat bypass that has modified L tables that I worked out with Wayne at Tuneboy. You can easily copy L tables from one tune into another.

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The Link Removed tune applied the PCIII trim map for D&Ds w/triple filters (in the file menu) and also committed those trims to the fuel tables (in the tools menu). We know the trims are committed because there are zeros in the fule%trim table.

For more flexibility, start with the 20222 tune and set the secondaries to 100%, uncheck the O2 sensor box, fix the speedo, etc., save the file. The go to the powercommander site

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and download all the trim maps for the Rocket. In 20022, apply the trim map (M510-005.djm) in the file menu. Your fuel%trim table will then look like the attached thumb nail. Note the 10% and 5% trims in rows 1 and 2. Save this tune. When you download it to the ECU, the trims will be applied but the trim map will remain in fuel%trims. This tune will be as close as you can get without installing a PCIII and having it custom tuned.

If this doesn't get rid of the popping, you can: 1) try increasing the values in the bottom 2 rows of the fuel% trim table; 2) start messing with the L tables.

 

[Gruntster]

I just got the 3KN's done Thursday. I now have the 3KN's, O2 removed, secondaries removed and D&D's.
I put in the 20222 tune with Tuneboy, the first one I used was modified with the speedo correction and rev limit, top speed changed.
The bike ran great if you were hard on the throttle. Just cruising along, not so well. It seemed to just lose power. Say I am at 2000rpm, steady throttle hand, the bike would just kind of peter out, like not getting any fuel. Then, it would 'catch' and take off like a shot. This is happening between 1500-2800 rpm, give or take. It doesn't really seem to matter which gear I am in, seems more RPM related to me. It also will stall on occassion at idle when coming up on a stop.
Today, I went to the standard 20222 tune (from the link in the post above mine). The bike acted no different on the way to work. If anything, maybe a bit worse. Crack the throttle a bit more when it is doing this, and it takes off. Ride hard, it is fine.
I did try to grab the PCIII files mentioned above, but the .exe wouldn't run on either my laptop or desktop PC. Not that I am sure those would help.
Any ideas?

 

[dougl]

The attached tune is 20222 with the trim from the PCIII map for D&D+triples loaded. Whe you download this tune, the PCIII trim will be applied.

 

[Gruntster]

Thanks. I'll grab that tomorrow and give it a try before work. I'll follow up here afterwards. Do you think that will help my issue?

 

[dougl]

Thanks. I'll grab that tomorrow and give it a try before work. I'll follow up here afterwards. Do you think that will help my issue?

The 20222 tune s for stock exhaust so it should be lean for you without the PCIII trim.

 

[GPMAZ]

Gruntster,

What you're describing doesn't sound like a tune issue to me. I would double check all hoses and make sure you didn't pinch or dislodge anything. If you don't find anything you could always reinstall the O2 sensor and check the box. That way at the RPM you are having the problem the bike should go into closed loop node. If the problem continues, I think (I'm not an expert here) that points to something other than the tune.

 

[Gruntster]

That does make sense. It was having no trouble at all prior to doing the triple KN's.
I'll load this new tune tomorrow and ride in to work. If that isn't a go, I am off Tuesday and Wednesday to investigate further.
Thanks!