6th Gen injectors in 5th Gen throttle body

Does anyone know if 6th Gen injectors fit straight into a 5th Gen throttle body?

 

Don't know whether they'll fit, but they are different part numbers.

 

Yes, the 5th Gen injectors are single point, while the 6th Gen are multi point.

 

Yes, they'll fit, and yes single vs 12. but are they plug and play? I'm hearing they are not due in part to a different plug style ?

 

I'll have to look at the photos I took of the two sets of mine (5 & 6 Gens) since I recently had both sets cleaned. They definitely are different and appeared to have a different shape so not sure if that means it wouldn't be plug and play. How the 5 Gens mount is completely different than how the 6 Gens mount.

 

My understanding is that they are different, you need to use the whole 6th gen TB's and air box together to make them fit a 5th gen.
You will also need to install a PCIIIUSB and get it on the dyno for it to run well, as the injectors will need different mapping.

 

Well, my thought is...wondering if there is any minor gains to be had if one was to switch. Mine being in a great state of tune says, don't mess, yet now after the fact I hear 6th gens do have a higher atomiziaion thing going on due to the 12 point spray pattern. which make sense. but then, like mentioned its a whole other TB system too, so no telling, yet curious if.. It's all in the details right. a little here, a little there.

 

Did this ever get resolved?

I have a bare engine that would benefit from such mods, if they can done reasonably economically, while the engine is on a trolley.

As for the Power Commander, does it need to be a PCIII, or can a PCII (which is what I have) do the job...?

 

I know it's been done, but I can't remember who did it.
I may have seen it on VFRD.
6G injectors do not fit 5G TB's, you need the whole thing.
PCII is getting a bit old and hard to find maps unless you dyno which you will have to do for 6G TB's.
PCIIIUSB is much easier to use and to program via a laptop.
Saying that, the PCII can slightly alter ignition timing I believe, PCIII can't.
Not sure if the advantage would outweigh the pain, but if you're not in a hurry it might be worth playing with it.
Downloading both manuals from VFRD will give you a better look at the differences.

 

Cheers. From what I'm reading, I'm not seeing a whole pile of benefit, TBH.

I may just have the thing dyno tuned with the PCII, and see if adding a couple of degrees of ignition timing helps. No issues in "seeing" the PCII on the laptop with the older PC software and a USB-serial connector. That said, a dyno tune is prob. the go...esp. if I want to check that it has "full factory power" (Sorry, couldn't resist given the threads - on here and VFRD - on that topic... )

 

Just a FWIW, the 5th gen does not like any advance above like 5500, nor at idle, so you are looking at like 2500-3000 range down low if. It was this why I didn't jump on a full rabid bike tune to get the ability to advance the ignition. Now a 6th gen and 8th that's different, they like a bit more here and there through the whole range, I'd like to think maybe there's a benefit to adding the muti spray 6th gen injectors, sound reasonable, but then one needs the 6th TB and god knows what else, so that too has been somewhat checked off the list.

 

FWIW, I downloaded a map for my PCII from VFRD, it says it's for 93 Octane, but Jeebus it's made a big difference in my bike. SInce all I have available is 91 Octane, that's what I run. Since the map it has been lifting the front tire in 2nd gear every time I hit is hard. I found out on the front straight at Streets of Willow it also lifts the front a little when I hit third gear. I didn't know it would do that until I got on the track. I just don't nail it that hard on city streets. And, my bike has over 81,400 miles. I can't wait to get a good suspension on it and some Q3+'s under it!!!

I'm on my desktop right now. I'll dig into my laptop and see which one it is. My 99 has a Delkevic header, Two Brother's Racing slip on and a K&N air filter.

 

Mine has stock '99 headers (Ceramic coated), Custom hi-mount slip-on (no baffle), and a K&N. Might be reasonably close...

 

Heck, your headers may even flow a little better.

 

Well damn, I can't compare with the header part it wouldn't be fair.

 

Pffft...Two Bros...Please!

It's ALL in the ceramic coating, I tell ya!

Get cracking with the TBR replicas, mate. "Share the love", so to speak.