[YumaYXZ]

There is certainly the possibility that Alba's tune could be fueled well enough for my exhaust setup, but unfortunately he (Nate himself) did NOT seem to be so sure and he suggested that it could also very well just be a starting point. While I am sure the Alba tune would be a better place to start than the OE GYTR tune fueling wise; that GYTR collector, pipe, even with the Trinity exhaust is quite small/restrictive vs. what I am looking to do and so I likely will require more fueling even yet. But yes if you are using ANY aftermarket "slip-on" this means that you are using the standard GYTR collector and pipe, while only changing the muffler at that point, and this is the difference.

My exhaust setup is a cast SS Garrett 5-bolt flange to 3" v-band, 3" tapering to 2.5" at the muffler, then using the Trinity Stage 5 KRX muffler which is 2.5" ID (with yxz frame mount).

Thanks for reminding me what you were going to do. I remembered the KRX muffler but didn’t recall the 3 to 2 1/2” setup.
👍🏻

 

[spottsjd]

Yeah but you know how that goes, what other BS do you run into (and you know you will) even if you went to the EMU Black or Motec even after the initial cost/harness debacles?

Having this FTecu setup with some eyes on a WB02 to get dialed, and confirm things ok during seasons/elevations/etc, should be enough.

It is possible your Alba purchase may just turn into a sunk cost, provided you want to further enhance your fueling, but least has possibility to resell it to try to get something back. Or you can just leave well enough alone for now and enjoy your ride as it is.

At the moment I am in for the FTecu and extra v2 GYTR ECU I bought just to read/compare with the v1 GYTR ECU that came with my kit. Adding in the Dynojet/pc6/autotune I hope I can avoid. I am pretty much turned off from going Stand Alone at this point now that I think FTecu has provided this avenue.

I think that, if you aren't going standalone, and if you can figure out how to modify the boost cut value, the gen2 was worth a few hundred lost $. I imagine you are outside the return window on it. I also wonder who's making these gen2s.

Also, didn't you say the same tune is on the v1 and v2, from what FTECU can tell? That would suggest a VERY loose tune with all the VE changes the v2 kit must have.

 

[RobBeck]

I think that, if you aren't going standalone, and if you can figure out how to modify the boost cut value, the gen2 was worth a few hundred lost $. I imagine you are outside the return window on it. I also wonder who's making these gen2s.

Also, didn't you say the same tune is on the v1 and v2, from what FTECU can tell? That would suggest a VERY loose tune with all the VE changes the v2 kit must have.

Yeah, I bought the v2 GYTR ECU (~$450 IIRC) in the name of science and sharing, I will probably just keep it as a backup. And agree 100% about the tuning being loose amongst kits! I'd expected a difference in every field with the presumption that they used some complex tuning software that populated it's own values as needed to meet AFR targets vs. varying parameters. Maybe they did that on the initial v1 kits, but with the exact values on the v2 kits for sure it is not looking to be much value placed on those fields vs. kit design.

Ultimately I think all these tuners just make their tunes fat and move along, which makes me think even more so fueling it myself would likely yield a similar to better outcome.

 

[RobBeck]

Update: Nate from Alba had reached out to me a couple months ago, after some FB convo about something related. He'd told me that he was indeed was using some older GYTR basemaps to tune all his stuff, which are believed to have been programmed by DASA back then (2016-2018 YXZ GYTR Turbo kit maps, which is why the Alba tunes need the fan relays to be jumped). However it sounds like all of the tuning for the later kits (ie. 2019+) are from "maybe" TD (up north in Canada) and at that point another way of programming came about, and what has basically been since then locked maps (only can be fully overwritten). I don't think much is known about these later "TD" maps, while they could be very good (great up to the limits of the injectors possibly), many have been trained to just "get tuned" and away they go.

Anyway I'd shared with him what I'd gotten from FTecu with reading these later GYTR ECU's (ie. 19+ GYTRv1 and v2 ECU read data files), where basically they made some minor header variations such that the 19+ GYTR Turbo ECU's could be read/written to using existing YXZ N/A file configurations. However he said that those updates firstly would lead to several tables (ie. boost compensations, etc) that are not going to be something that we can view (let alone alter) if needed. He also said that changes may likely lead to a bricked ECU, but he was going to try to confirm (he said he knows how to unbrick one if so). Meanwhile I have not tried one yet either, but will soon enough if need be.

All said I've been back at it with FTecu the past couple months trying to get them to define the CURRENT GYTR ECU's (entirely), which will require a new YXZ Turbo ECU configuration, but of course not getting much of anywhere as they always have their latest priorities. So much time and money into this all trying my best here to do nothing more than help out and info share with the platform, I'm worn down but not done yet.

 

[RobBeck]

Just to update on my own car, it is now GYTR turbo equipped, and GYTR clutch now too since my OE clutch gave in quickly.

Some readings on each project can be found below:

GYTR Turbo setup first ride!

240HP? Everything I've read says RWHP is just under 170. And this is a stock motor?

www.yxztalk.com

GYTR Clutch Woods/Trail Friendly on SS?

Some of you maybe on Facebook, if so I put a post up earlier and man I feel that there is no love for the GYTR clutch based on their feedback. I am asking about ideal trans oil and all I hear is BoostLoc BoostLoc BoostLoc, I am sure that the product is great and I have not ruled it out if needed...

www.yxztalk.com

Going to get a few more miles on the setup, make sure the fuel pump is holding pressure all the way through the top end, and then add my all out custom exhaust and see how my WB02 fueling and fuel pressure accommodates the changes with the "TD" style GYTR Turbo ECU tuning.

Here is a thread I'd made on the question of the GYTR Turbo ECU fueling with high flow exhaust systems:

GYTR Turbo setups with Exhaust absolutely need tuning?

Yep. I also removed the EVAP canister to de-clutter. As I kind of expected this popping complaint (with Air Injection in place) is more than likely only an issue with the N/A cars after adding exhaust, and less to no issue with turbo cars with exhaust. Theory is that the turbo may act as some...

www.yxztalk.com

Also on the note of fuel systems, if my Fuel pressure is found to be dropping especially, or if I even need better boost compensations after adding the exhaust (1:1 FPR mod):

YXZ Stock Fuel Pump limitation after going GYTR turbo?

Anyone know the LPH of the OE pump? Or how much HP it is capable of supporting? I have just installed an GYTR Turbo setup on my machine and already know I will want to start bumping boost and making more power, but as safely as possible and thus am looking into fuel system stuff now. Please...

www.yxztalk.com

 

[crashxx]

Not sure if this applies or not, but I'm running the GYTR v1 kit w/ Dasa exhaust. I sent my stock ECU to Alba for their stage 2 tune which, if I understand right, richins things up to account for the exhaust flow. Is there any piggy back controllers that will look at AFR and adjust in real time?

 

[RobBeck]

Not sure if this applies or not, but I'm running the GYTR v1 kit w/ Dasa exhaust. I sent my stock ECU to Alba for their stage 2 tune which, if I understand right, richins things up to account for the exhaust flow. Is there any piggy back controllers that will look at AFR and adjust in real time?

This means your 19+ GYTRv1 Turbo ECU (presumably TD programmed) was entirely overwritten by a Dasa based 2016-2018 tune with some richening up for the exhaust by Alba. I have another thread which is trying to bring into question whether we'd even need a "tune" if using the newer "TD" tuned ECU's (even with exhaust). Personally I'd like to keep the more modern basemap and work from it (as needed), but that has been the struggle with this thread to date.

Dynojet PCV/PCVI (5 or 6) is a popular choice piggyback that is supposed to help keep the tune in line, and could be a good way to go when said and done.

 

[crashxx]

Right, Nate did tell me he reverts to the earlier ECU tune. Are there things in the newer TD tune specifically that you like?

 

[RobBeck]

Right, Nate did tell me he reverts to the earlier ECU tune. Are there things in the newer TD tune specifically that you like?

Tough to say with any precision? I've never even held an older '16-'18 GYTR Turbo ECU let alone compared its data to the newer units, so keep that in mind.

BUT right off the hip there's the below:
1) It operates both fans on the 19+ without need of jumping relays.
2) It was designed 100% up for the Map sensor that TD has always used, Gap Innovations.
3) There is some level of safety in the ECU's, cylinder to fueling shut down etc. (not sure if in older setups).
4) TD (if presumed to be correct as the 19+ GYTR ECU tuner) has a MASSIVE history tuning these same engines in the Snowmobiles, so they probably have a very good base tune.
5) In general tuning things typically are bettered in time, so I expect these later style base files are likely much improved (and/or a better place to begin tuning) than with the older base tunes.

I am also very much wondering if it has good boost compensations/timing maps to push more and more? But I'm not sure at the moment and it doesn't seem anyone really knows much about anything around the platform, so they simply write over it as that is what the person before them did and said to do. If we can keep FTecu on development for these later GYTR ECU's we could find this is an absolute great starting point, that for the most part may need very little to no changes, and allow us to configure for own specific mod list with relative ease. All things any canned tune makes very difficult to achieve.