For those of you out there who have purchased tuned Power FC's from Ray at SR Motorsports, could you please share some of your experiences with us. I am considering buying a tuned PFC from him, but I have heard differing opinions about this product.

A) I understand that Ray clips the necessary pins to ease PFC installation. Have you experienced any problems with this? Everything works?

B) What have your experiences been with his tunning/maps? (I have DP, CB, Intake, Efinny Y-pipe, and IC.) I am concerned with running too rich/lean, controlling boost, and 4500 rmp transition control, etc. Will I need to further "tune" the PFC to make the car run its best? How many of you were able to just "plug and play"?

C) Does Ray "retune" the PFC for free if you add more mods or the car is not running correctly? Has anyone ever had to send theirs back to have it retuned?

Again, any experience (good or bad) in these areas would be greatly appreciated. Please limit your comments to first hand experience in order to eliminate the "Ray just sucks!" or "Ray is Awsome!" comments as these are really not helpful.

Thanks again,

Jeff

 

the previous owner of my car (apparently) had the PFC tuned by SR motorsports. I have not dealt with them directly. I got the car on the dyno today and it was running quite rich. A/F ratios between 10.1 to 10.5 in the upper RPM range. I'm sure this was to error on the side of safety. Much better to be too rich than too lean, especially with these cars. Mods are in sig.
-Rob

 

I bought my Power fc from them. I would not do it again. I'm not downing them as a company, but for the same price you can get a tuned fc from them you can buy a power fc, commander, and datalogit. This setup is ten times better. You would need dyno tuning with their map too so why not just do it all your self. Also their maps are alredy available through people with the datalogit.
Nick

 

I have mixed feelings about the PFC I got from Ray. I put it in before I ran my new engine to break it in, and on that end, I was very happy. Considering I was timid about running a new engine with a new maps, I wasn't sure if it would lead to a thousand problems or if it would work out. Well, broke it in fine, and once on the boost, experienced no signs of detonation or a lean condition. This is where I get iffy on the subject. As I went to tune for hp on a dyno, I found on a wideband that it was running extremely rich and with intake, dp, mp, cb, fmic, y pipe, @ 14psi, I was only getting 280rwhp. Very disappointing if you hear numbers others claim on this forum, so I went in to start adjusting fuel to get the AFR up to where it is safe, but produces better power. I ended up messing with three rows of fuel for full boost from 3500-7500 and took so much fuel out until the AFR decided to rise that I felt something was wrong. And after comparing those numbers to the maps of other people on the board, decided I'd settle on the incredibly rich side of things to be safe until I got a chance to use a Datalogit to see what Ray changed. So, I would suggest going out buying a "retail" PFC, commander and Datalogit and going about the tuning process yourself with maps from this board as a baseline. The reason is because if you buy a PFC programmed from Ray or XS, or anyone else, you will be on a different starting point than most people on this forum and while your maps may be set properly for your car, they may be WAY off from anything else you see.
I would like to also say that Ray has been helpful with helping me address this problem and I understand his reasons for running these maps so rich from a liability standpoint. Good luck on your PFC tuning!

Richard

 

Hey Richard,
I too just dyno'ed w/ Ray Maps w/ similar mods as yours and also expected better than my 273.9 hp. Granted my intake temps on the runs were 55 cel, but I know I ran rich. Did you adjust fuel down a good amount then retune, or did you adjust then decide to adjust back after your dyno runs? Just wondering if you did dyno after you thought you pulled too much fuel out?

Steve

 

I have not retuned the maps, I went back to what Ray had in there more or less. I did change a few cells, more in the drivability area. I am waiting until I get a Datalogit to see what has been done to the base maps, save them as "Ray's maps" and reinitialize, and load some maps on the forum. I think Tim Benton's will be a good starting place, then head to the dyno for some tuning.
I have been to the dyno because my intake temps were high as well, and I put some ice on my radiator and intercooler and got intake temp down to 15C. It did do a lot better, but ignition broke up at 5500 rpm. I was at 292rwhp when that happened. I replaced the plugs and wires and have yet to be back, so it looks to be promising when I get time to tune it with some decent air temps.
Ray's maps were still to rich with the lower air temps and the higher power run, but it was good to see my car is capable of 300+rwhp on .8 boost. I will update when I get a chance to retune.

Richard

 

Roadracing7,

Thanks for the feedback. You are right, Ray wants quite a bit for his tuned Power FC's. I guess I hadn't thought about doing my own tuning. That brings a few more questions to mind.

Is the Datalogit a computer program that allows you to see and change all of the tuning parameters in the pfc? It sounds like tuning your fuel is fairly straightforward, but what about adjusting timing, and other parameters. It kinda sounds like there are quite a few people out there stubling around in the dark. I don't want to be one of those people.

Also, who would you suggest buying a pfc, commander, and datalogit from? What about a wideband? How much?

Sorry for all the questions.

Thanks,

Jeff

 

Jeff,
Probably should just buy your PFC from(here) the RX7 store. Jason is a good guy to deal with(he has really good prices), plus he created this great forum and for that we owe him many thanks.
Now would you want the commander if you were to get the datalogit? The datalogit does all the commander does, in a easier to read and adjust display and it does even more. I just saw it once, but it had a lot of charts. Though, unless you want to mount a laptop in your passanger seat, its not a permanent thing to drive around with(though some people I am sure do).
With the commader you can adjust stuff(fuel, timing) but you can also mount it and use it as a gauge, because it can tell you water temps, airtemps, knock and other things. If you have the money get all you mentioned. A permanent wideband in your car will cost I guess $400-500, but w/ that and the datalogit, you dont need to dyno tune, you could do it on the street. Just dyno once for HP/Torque values.

Hope this helps,
Steve

 

I got mine from Ray, no problems, just a little on the rich side, which I expected them to be. I've since taken out a little fuel and adding a degree or 2 of timing in areas of my map. The one posted to the forum is the maps Ray sent on my PFC.

Tim Benton

 

Tim,

Where did you make the changes specifically? Thanks

 

Thanks to all for the input guys!

Steve,

How much could I save if I opt to pass on the commander? It seems like $1000 for a PFC and Commander is a common price, so how much for the PFC only?

Tim,

What are the mods that Ray tuned the PFC for? Do you know how much he changed them from the maps that come with the unit?

Thanks,

Jeff

 

to address your questions, i have dealt with 3 pfc's about 2 years ago somethings may have changed
A) he did not clip the pins
B) the only tuning that was done was to set the injector sizes. 2 of them were dynoed, one was the rx6 kit (it was purchased in the package deal) it did 342ish and it was about at the right afr, the other one is stock turbos
with all of the bolt-ons it did 373rwhp and it was way rich in the low end and leaned out on top it later blew up at high load (180mph)
C) i have heard that he charges for retuning, but we tried to get him to tune the 373hp car and he would not do it at all.

if it was my money i would get a pfc and a datalogit, buying a pre-tuned one from ray or anyone else is not worth any extra money unless they put your car on a dyno.

mike