This is a discussion on Dynojet PV3 and Power Core - Juicy Detail and Help Inside within the Grom Performance forums, part of the Honda Grom Garage category; Originally Posted by 50-50 Well people want something that works. Coming from the perspective of a tuner with real-world experience in motorsport tuning, PV3 works, ...
-Anti-lag (won't work on a single cylinder)
-Knock sensing (most OEM stuff has this... the Grom does not)
How many of those are you gonna use on a single cylinder, air-cooled, NA Grom? BBK or not, most of those will be useless or just toys for street riding.
So, to sum it all up, here's my thoughts on the Aracer vs. PV3 (the only two worthwhile tuning solutions for the Grom, IMHO):
Buy the PV3 + wideband kit for a street bike or regulated race bike.
Spend more and buy the Aracer if you want to fine tune spark timing on a dyno to get the last 0.1 hp out of your bike (given the knock sensing capabilities). The other features are just added benefits. If you have a race bike, make sure you can run a standalone before buying the Aracer.
All that said, I do NOT know the quality of the Aracer knock sensing. This is an incredibly complex system requiring crank position sensing, knock window timing, frequency filtering, etc. and I have no clue how well it has been engineered.
Lastly, buy a forward-facing slide carb. with as short of a runner as you can get if you just want to brag about your peak horsepower number. Fuel injection is NOT going to add much in terms of performance on such a simple motor.
Last edited by mrsaturn7085; 10-11-2019 at 05:42 PM.
As far as generic FI tuning, do you have a book to recommend that would apply to the PV3 and the Power Core Software Suite?
Oh and most of the vendors that sell PV3 can't even support it. They seem to know nothing about it.
You're arguing semantics.
I'm not a professional tuner. I'd be happy with autotune. If it didn't work would Dynojet offer it on their other products?
Last edited by 50-50; 10-15-2019 at 08:13 AM.
Leaf Spring Mafia: http://www.instagram.com/LeafSpringMafia
If you want excellent closed-loop fueling, buy the PV3.
If you want knock control (of unknown quality), buy the aRacer.
The closed-loop fueling (if even offered) on motorsport-oriented systems will not offer the fuel economy you will see on OEM based units. It will usually offer the ability to target a non-stoich. AFR with a wideband, however.
The only major bug I've noticed with PV3 on the Grom is that disabling decel. fuel cut doesn't really work reliably. Dynojet's firmware engineers have only cracked part of the OEM code needed to disable this feature. I have informed them of this.
Also, they (Dynojet) have been extremely good about getting back to me with any questions I have, though sometimes it takes a few days. They certainly tailor WHO they connect you with to your level of experience. I cited years of MoTeC, etc. tuning in my initial e-mail and they got me right to the engineers.
My point is not that auto-tune doesn't work... it's that auto-tune doesn't do much and is over-relied upon by end-users. It's a time-saver that can get you into a LOT of trouble if you don't understand what it is doing. A single outlier data-point using auto-tune (which is a glorified name for aftermarket short-term fuel trim) can blow a motor if the tuner doesn't catch it. Common or likely? No. Possible? Absolutely.
What I am doing is comparing the real-world benefits of aRacer vs. PV3 and I'm happy to compare them in-depth if you have specific questions (i.e. is x better than y for knock sensing, etc.). I mentioned above that I cannot use the aRacer software as the manufacturer has taken the old-school method of locking their tuning software down with a license. It's too bad, really, as the GUI can really make or break one's opinion of a tuning platform.
I am not shilling for either platform - they're both good though I can only comment on aRacer from a sky-level view at the moment.
I don't think you need to compare except the pricing, seems to me all the fast groms in Northern Calif Bay area are runing the Aracer ECU, ask GromFatherZ what ECU he uses and I'm sure it will be the Aracer RC-2 and most of his groms builds are running in the 80-110mph with his ported head, special hardware for Crank Case pressure and such, speed spacers, HD crank case rods and the list goes on.
Even his GromFatherZ 125cc engine with his special detail to porting and some other trick stuff are using Aracer ECM
It so funny to read how aracer owners say its better than the pv3 without having tried the other fuel controller and viceversa...
Its like kids arguing without facts and real comparisons...
Both are good...
In good hands both can do their job... In bad hands you can be the "piston melter" blaming everything but your hands...
By the way... This is a pv3 post... Who wants to talk or say wonders about the aracer can post it in his dedicated posts or create new ones...
Enviat des del meu LG-H870 usant Tapatalk
Last edited by obijuanito; 10-15-2019 at 03:19 PM.
Shit happens with what ever hardware you use, HEAT and friction is your enemy, including with that is Lack of oil, right petrol to use, correct hardware to use and correct ECU to program.
I've owned my groms since Jan 2014 and June 2014 and part of the original BBK kit builders so in life you test, sometimes you fail, and sometimes you find something that works for the grom.
Life goes on, just ride safe even in France or any of those European countries but ride it like you stole it.
Last edited by CiscoSanJose; 10-15-2019 at 03:27 PM.
Ever tried pv3? Ever used power core software? C3 or anything related to pv3???
If not, how can you compare them?
If you are happy with aracer... Good for you.
But post it in aracer postd and leave this post for pv3 technical stuff!
Enviat des del meu LG-H870 usant Tapatalk