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New 5th/6th/8th gen performance header now in production in USA


sfdownhill

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On 8/18/2021 at 3:04 PM, Ziffer said:

 

 

 

I'd be pretty damn interested if there was ever another batch run. Honestly, it's kinda outside my budget right now. I have other priorities. But, if the chance came up, I'd prolly throw money at it. I want 'em bad. The guys I ride with all have pure sport bikes. they are all fast, but I love my VFR. I also hit up MrSquiggle, but he hasn't answered

Apologies for the slack response time Ziffer. I’ve answered your PM. 

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On 8/10/2021 at 4:17 AM, ae86andkp61 said:


It looks like I missed out; but I’m totally committed for the next batch for my 6th gen!
 

I messaged MrSqiggle a few weeks ago about buying the uninstalled set he has for sale on these forums (even though shipping from Oz would likely be expensive) but it seems he hasn’t logged in for over a month. 😩


Apologies for not getting back to you sooner ae86andkp61, I’ve answered your PM. 

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So the run of 5th/6th gen VFRD headers were all the same, right? So any of that run will fit a 5th gen or a 6th gen, right? There weren't some built for 5th gens, and some tweaked for 6th gens, right? Trying to be sure I understand this correctly.

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The only difference between the 5 gen headers and the 6 gen headers is the 6 gens have 5/8” cut off their collector exit pipe to allow the complex 6 gen midpipe/dual muffler assembly to fit.

 

Having just installed a set of 6 gen mufflers on these headers, I’m thinking we should have cut off 3/4”...maybe even 7/8”. Any other 6 gen owners think a little bit shorter collector exit would have been a better fit?

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2 hours ago, sfdownhill said:

The only difference between the 5 gen 

 

Having just installed a set of 6 gen mufflers on these headers, I’m thinking we should have cut off 3/4”...maybe even 7/8”. Any other 6 gen owners think a little bit shorter collector exit would have been a better fit?

 Not here. Actually if they were not cut off at all I'd probably be fine with it.  It's easier to remove material than to add more.  FWIW I  have Remus cans and midpipe. Each brand / type is probably somewhat different.  I'd thought about moving these to my G5 once the 8th headers go on to accommodate other mods, but it's not clear to me that they'll fit up to the G5 midpipe / can having been cut.  Who knows  - maybe I'll be in for a G5 set if another batch is run. 

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I've managed to locate an unused header to buy...Mr Squiggle came through and I'm quite excited! Thanks for the help, everyone! Now I've just got to figure out how to tune it....leaning towards the My Tuning Bike as it seems to have some great features, but the Power Commander may not be as capable, but it is so well-known and well-supported, that it has some appeal as well.

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The main advantage of RB over PC is that RB can adjust fueling on the fly to maintain the target AFR whereas PC cannot  (even with Autotune).  The latter requires trial and error to create what is still a fixed map.  OTOH RB software is not as user friendly - the documentation is translated from Italian. I'm in no way bashing it, but it is a steeper learning curve vs PC.  If you're running it on a  G6, IMHO the cable for the wideband O2 sensor is too short. I bought a 3 foot extension cable and it's been fine.  Also,  you'll be keeping your 2 stock O2 sensors (I have no idea why), so on a G6 you'll have a total of 3.  IMO the RB tune without the MTB was better,  the target AFR in the MTB map I think it's a bit lean.  Over the winter I need to learn how to create multiple maps and adjust AFR targets to get it just right.  

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10 hours ago, ae86andkp61 said:

I've managed to locate an unused header to buy...Mr Squiggle came through and I'm quite excited! Thanks for the help, everyone! Now I've just got to figure out how to tune it....leaning towards the My Tuning Bike as it seems to have some great features, but the Power Commander may not be as capable, but it is so well-known and well-supported, that it has some appeal as well.


Glad to hear it, ae86andkp61. I’m with you on the RB vs PC - I’m  considering going from my current PC3 to RB w MTB when I do velocity stack and airbox mods on my 5 gen. Yaman is the man at RB USA, and there are a number of members here that he’s helped with setting up AFR maps for their RB systems, so that’s a consideration.

 

9 hours ago, Cogswell said:

Also,  you'll be keeping your 2 stock O2 sensors (I have no idea why), so on a G6 you'll have a total of 3.  IMO the RB tune without the MTB was better,  the target AFR in the MTB map I think it's a bit lean.  Over the winter I need to learn how to create multiple maps and adjust AFR targets to get it just right.  


Cogswell, my understanding is that it’s not so

critical to keep the OEM O2 sensors with RB if you’re running MTB. Without MTB, the OEM sensors send O2 sensor readings to RB, which then communicates with the ECU to manage fueling. MTB takes over those duties when installed. What I’m not certain about is whether it’s important to have the RB connected to the OEM O2 sensor connectors going to the wire harness/ECU if you’re running MTB, or if MTB negates the need for OEM O2 sensors altogether. It’s a good question for Yaman at RB USA; as mentioned above, he’s a great resource for assistance when setting up a RB system, with or without MTB.

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1 hour ago, sfdownhill said:


Glad to hear it, ae86andkp61. I’m with you on the RB vs PC - I’m  considering going from my current PC3 to RB w MTB when I do velocity stack and airbox mods on my 5 gen. Yaman is the man at RB USA, and there are a number of members here that he’s helped with setting up AFR maps for their RB systems, so that’s a consideration.

 


Cogswell, my understanding is that it’s not so

critical to keep the OEM O2 sensors with RB if you’re running MTB. Without MTB, the OEM sensors send O2 sensor readings to RB, which then communicates with the ECU to manage fueling. MTB takes over those duties when installed. What I’m not certain about is whether it’s important to have the RB connected to the OEM O2 sensor connectors going to the wire harness/ECU if you’re running MTB, or if MTB negates the need for OEM O2 sensors altogether. It’s a good question for Yaman at RB USA; as mentioned above, he’s a great resource for assistance when setting up a RB system, with or without 

 

Here's a shot of the MTB installation instructions. Note that it says to retain the stock O2s and cautions that it may not work correctly without them.  It seems to imply that the Racing module needs that input regardless of whether a MTB is installed or not.   Seems like they could develop a Racing module that could read a wideband sensor directly. 

 

20210907_083814.thumb.jpg.e0fcbcc5b537060ce7698bae0c1ee0c5.jpg

 

 

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28 minutes ago, Cogswell said:

Here's a shot of the MTB installation instructions. Note that it says to retain the stock O2s and cautions that it may not work correctly without them.  It seems to imply that the Racing module needs that input regardless of whether a MTB is installed or not.   Seems like they could develop a Racing module that could read a wideband sensor directly. 


Thanks for that info Cogswell. And yikes - my headers don’t have bungs for the OEM O2 sensors. Plus they’re already ceramic coated. Dang. Well, it’s just another of those puzzles we solve when modding our VFRs.

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On 8/24/2021 at 4:21 PM, Ziffer said:

Well, that's three...only 17 more to go...*sigh*

 

 

 

I would be seriously interested in a VFRD 8th gen header, missed out on all this forum talk, wish I would have paid more attention earlier the last year and a half, but I couldn’t figure out the email to confirm my account. 😭

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On 9/7/2021 at 12:26 PM, sfdownhill said:

my headers don’t have bungs for the OEM O2 sensor

You could always add them. Adding O2 sensor bungs aren't foreign to most welding/exhaust shops. I added one per cylinder ~4-5 inches downstream from each exhaust port on my WiLD set.

Made adjusting AFR's a lot more predictable for my guy.

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My headers arrived unscathed! Mr. Squiggle did a very thorough job of packing, and he even threw in all the hardware, gaskets, and aluminum Sebspeed center stand stop that he had collected for the header! 😆 Due to the fact that now is coming into some of our best riding here (cool mornings/evenings, warm afternoons, mountain roads open and clear, many days still sunny) and due to a lot of my spare funds currently going to my Suzuki Cappuccino restoration project, I will probably install these and work on a tuning solution sometime this winter.

 

Here's a few photos of the big sturdy box, and the headers out of the box on the kitchen floor. And before someone asks, yes, that is a dirt bike wheel in the front entry of my place. 😜

 

VFRHeader04.JPG

VFRHeader03.JPG

VFRHeader01.JPG

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