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I should have noted that my 2015 GT has 20" OEM wheels with 275x35 Michelin Pilot Sport A/S 3 tires (stock exhaust). This no doubt exacerbates the noise issue as compared to the 18" or 19" wheels/tires although the track options might be as bad. I do still prefer the look however. Love Far...

I will echo most posts. Took a 3 day ~1600 mi trip in spring of 2019 (to see alpine blue bonnets in BB) with my son from Austin area to Big Bend and onto El Paso, White Sands, Carlsbad NM & home. Comfortable with excellent OA gas mileage of 27 mpg cruising at 85 mph or so avg speed. Pretty...

The rev hang sounds more like the original tune (or maybe the first pp2 tune). As stated previously, the revised pp2 does not act like that and the responsiveness and power increase from 4k-6k is v noticeable. I wonder if the load failed. Try reving the engine to redline. does it go to 7200rpm...

Handle says it all. 71 in Sept. 2015 5.0, 6MT, FR PP2. Plus 2007 Aprilia Tuono, 2008 Triumph Street Triple, 1975 Norton Commando, 2008 SLK350. Owned 5 Mustang GT's since 2001. Each new one was a better Mustang. This is the first that is also a better car. Prior models racked up mileage in...

Checkout my post #3112 on page 208. I overlaid the LMR pp2/pp3 dyno plots. The two calibrations are roughly equivalent from 3600-6300 rpm. PP3 is generating more power/torque above 6300 as expected, but it is ALSO generating more power/torque from 2000-3600 according to these curves. Of...

If you wish to retain the stock tune (to restore for vehicle resale or whatever) you should "open" the original pp2 calibration file and then select the "restore" option before you flash the upgraded pp2 calibration. The stock tune will be flashed from the Procal unit. Takes five minutes...

Street tires? Just read your data. Duhhh...

Not sure. Original calibration file: GR3A-SEMA2M-FA1_1FA6P8CF0F5345356_05DE.pc3 Revised calibration file: GR3A-SEMA2M-FA2_1FA6P8CF0F5345356_05DE.pc3 My guess is that you get to download both and choose. Let us know what you find. Note these numbers are for 2015 MT GT. Maybe slightly...

Just got off chat w/FFR Matt says: Hello david. My name is Matt how can I help you? david says: inquiring (again) about availability of revised calibration for pp2 Matt says: It is available. You need to go through the same steps as originally installing the calibration. It will...

thanks. It may be that the other photos got included. I'll review. After posting I took another look at it. The top end torque curves really diverge at a steadily increasing rate beginning at 5500.

I had not seen a direct comparison of pp2 and pp3. Pretty interesting. Overlaying the two LMR dyno sheets from Youtube says that if you like pp2 you would love pp3. From 3600 to 6300 rpm they are pretty much indistinguishable. pp2 has a slight edge from 4800 to 5600 rpm, but pp3...

I was wrong. It is 3.31. Same issue though. Here is a link showing 3.31 vs 3.73 in all gears. 3.55 is a little closer to 3.73 than 3.31. I have had 5 Mustangs since 2001 with all three ratios (all manual). All (260 hp - 455 hp w/pp 2) got about 20 mpg avg gas mileage (lower teens if...

The PP2 kit is great (and hopefully better with the new calibration), but the torque boost doesn't really kick in until 3500 rpm or so. Look at the PP2 vs std dyno curves posted by Todd on 5/31. The biggest improvement is between 4k and 5.5k which is a pretty accessible range for every day...

just chatted with FFR inquiring about updated calibration. Initial response was availability in 1-2 weeks. When I responded that this is what I was told 2 weeks ago he was gone for a couple of minutes and finally responded that he spoke with engineering and the release should occur this week...

Intake noise at WOT is considerably louder (deeper tone). Exhaust may be too, but to my ear it is overwhelmed by intake. Personally, I would like a bit less. I think a fully contained air filter housing would be more subdued. I'd bet that is one of the changes that we will see in the 2018 model...

from Ford Performance page regardin power pack 2 Fits 2015-2017 Mustang GT Features exclusive no-lift shift strategy and enhanced throttle response Ford Performance calibrations feature exclusive Ford proprietary software and engineering Ford Performance calibrations are 50 state legal...

Not vacuum. They connect ahead of throttle body. Probably emission control related.

Lol... You're right... maybe. I'm no expert, but it is interesting how many different ICE (and external - sterling) designs/arrangements there are out there. Many are perennially on the cusp of commercial success. I was trying to keep things simple. It seems that the experiences offered by...

At the risk of being a bore: Detonation occurs after spark plug fires and typically after TDC. The plug firing creates a flame front that normally expands through the cylinder volume until all the fuel is consumed and/or the exhaust valve opens. Detonation occurs when the flame front...

For the engineering minded here is a very in depth discussion of detonation and pre ignition. The magazine is focused on experimental aircraft, but includes much discussion on automotive applications. It is a deep read, but I learned a lot, especially regarding pre ignition being silent but...