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New Dyno Run 785 hp 605 lb-ft. Current setup: StainlessPower 1-7/8" LT Headers, Test Pipes, MBRP Touring/Street Exhaust Kenne Bell SC Sai Li fuel System E85 Sai Li hit its limit. Fuel pressure started to drop at high RPM. At least I know the next thing that needs to be upgraded.

Sorry about pic quality, I didn't take it. 2016 Mustang GT Kenne Bell SC Sai Li fuel System E85 Stock exhaust manifolds and cats Borla Atak catback Getting Retuned tomorrow. Different tuner, and have added catless headers and went to an MBRP touring exhaust to offset the headers.

Honestly, I don't recall checking it. I was having a problem with the clutch itself. The clutch had to be sent in for a rebuild.

With a mechanics stethoscope, I can hear the rear diff is very smooth. It should be, its new. I pulled the Torsen out for a limited slip. Same noise with both.

Yeah, I am trying to get an idea what it is before pulling it apart. If its loose parts, I think its inside of the transmission or engine. The clutch has been apart and rebuilt without that noise changing. It has also had a new throwout bearing. Its not really noticeable over 2k rpm, though...

I have a 2016 Mustang GT. I have a low RPM rattle. This is a 5.0 with a manual transmission. So it is an MT-82. It has a McLeod Lightened flywheel and the RXT clutch. The noise is either the engine or transmission. It seems to emanate from the trans but thought I would see if anyone else...

DSS is sending me a new CV kit. Not cheap, but cheaper than a new shaft. We will see how long this one lasts. The old one has major pits where the ball bearings were interfacing. Yeah, it was bad. The housing had a pretty good crack in it.

So my car is very similar to yours in year and power. That is a great data point if you can take the stock driveshaft. I have a manual trans but would be a good thing to try. Why did you get a new one?

Ha, you are not the first one to tell me that. Stock one is long gone. I would have to get another. I was going to send it in, but with the cost of shipping and repairs, it is going to be expensive. Then I will have a shaft that I know only lasted a few thousand miles the last time... I like...

I have a DSS aluminum shaft in my car (2016 GT M/T). It was a 2019 build shaft and has well under 10k (close to 6k) miles on it. The rear cv already has noticeable play. It clicks when I twist it. I compared against a new good one and its is different. It also tightens up when I compress...

I am pretty sure I read in the Eaton literature it works with the factory gears and bearings. You should be fine. The question I have is, do you like the Truetrac? My torsen is noisy and I was going to do a complete carrier swap to a 3.31 and trac lok. But I figured I would spend more time...

How do you like the Hitmaster clutch control?

No worries, I must have bad information on ratios. I thought the 15 had a 3.66 first and the 18 had a 3.24 first. 15 - 3.66*3.73=13.6518; 18 - 3.24*4.30=13.932; if 18 had 4.56, 3.24*4.56=14.774. I think the 4.30 is closer. The 4.56 is more common, but the 4.30s are out there. Of course I...

I am looking to buy one yes. If its an iron case, I would be interested.

It is pretty wild to me how deep 1st is on the 15-17. Combining that with the 3.73 really is a great NA setup. With the 18+ trans you have to go with something like the 4.30 gear to get the same overall reduction as the 15-18 with a 3.73, for 1st and 2nd. Its like running a GM F-body T56 with...

Correct. I mistakenly put 3.73.

If you go to 4.09's it will be similar to a 15-17 with 3.55's. I am supercharged on 3.73's in my 16. It smokes tires in 1st and 2nd. Not much chance of traction on the street. 3rd on a hot day and a slow throttle input will hold the power. Have to be gentle going into 4th or that too will...

I haven't measured it yet. I plan to when I take it apart. I have to take it apart to put 3.31's into it. The 3.73's are just too tall for the car. I have to be in third to hold at all on the street.

I have read through a ton of posts about the runout on the 15-17 pinion flanges. I see the automatic got updated to improve tolerances and concentricity to reduce runout. I see that there is a new revision number for the 15-17 manual trans flange. Can anyone confirm that FR3Z-4851-B would...

I am looking for the Coyote Cookbook, or the Tuning School's Coyote SCT tuning book.