CamasM3e93 wroteReplying to my own post, let the internet explode, lol.I'm not a fan of the Harrop whine, I know others love it. I am already making use of the rubber gasket covering the factory airbox outlet. I was at a road race event last month and one of the people there didn't even realize their supercharged Land Rover had the same style blower because the oem design includes a cancellation chamber - no whine. I purchased intake equipment for a Land Rover and a roots blower supercharged c7 corvette. While the c7 design in particular was feasible, use of it would require a smaller than necessary air filter and undermine the bmw factory cold air intake. So creating new problems to address another.
Plan D: Dynamat on the inside of the airbox lid….will put to test this weekend.
CamasM3e93 wroteIngenious! Well done and thanks for the great information. Worth considering a repost in the 'Official Harrop' thread too.Took the car for a drive to work today and am VERY impressed how well a simple layer of Dynamat on the inside of the factory airbox lid muffles the Harrop supercharger whine. At freeway speeds and hard pulls, it is 95% reduced, so much so that it is hard to hear at all. At neighborhood speeds, I'd say about a 60% reduction. This is a huge improvement and probably makes the difference in my keeping the Harrop kit long term. Really excited about it.
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CamasM3e93 wroteNo pressure relief valve but maybe a high side leak if you lose it that quickly. When the systems running the High side will be around 180psi depending on ambient temperature. You'll have to charge it again and spray some leak detector around all the joints/fittings and look for a leak. The smaller diameter piping and condenser is the high pressure side, you could get away with a half charge maybe to locate it to not waste the refrigerant. Or you could put some UV dye thru the system and look for a leak with a black light.CamasM3e93 wroteReplying to my own post, let the internet explode, lol.I'm not a fan of the Harrop whine, I know others love it. I am already making use of the rubber gasket covering the factory airbox outlet. I was at a road race event last month and one of the people there didn't even realize their supercharged Land Rover had the same style blower because the oem design includes a cancellation chamber - no whine. I purchased intake equipment for a Land Rover and a roots blower supercharged c7 corvette. While the c7 design in particular was feasible, use of it would require a smaller than necessary air filter and undermine the bmw factory cold air intake. So creating new problems to address another.
Plan D: Dynamat on the inside of the airbox lid….will put to test this weekend.
Took the car for a drive to work today and am VERY impressed how well a simple layer of Dynamat on the inside of the factory airbox lid muffles the Harrop supercharger whine. At freeway speeds and hard pulls, it is 95% reduced, so much so that it is hard to hear at all. At neighborhood speeds, I'd say about a 60% reduction. This is a huge improvement and probably makes the difference in my keeping the Harrop kit long term. Really excited about it.
Not so excited that I seem to have a refrigerant leak after my compressor job. The weird thing is that the system held vacuum for 30 minutes after putting it on the vacuum pump but every drop of refrigerant I added went to atmosphere. I assume I've got a pressure relief valve that went faulty for some reason. Will search around for a bit but will probably relent and take it to the shop.
CamasM3e93 wroteIn this case I would recommend a 24h pressure test with nitrogen.Not so excited that I seem to have a refrigerant leak after my compressor job. The weird thing is that the system held vacuum for 30 minutes after putting it on the vacuum pump but every drop of refrigerant I added went to atmosphere. I assume I've got a pressure relief valve that went faulty for some reason. Will search around for a bit but will probably relent and take it to the shop.
Vedubin01 wroteHope you do a post about the cf drive shaft and what difference it makes if any.Been collecting parts lately to spend a few days really knocking out some work. Be replacing almost every bushing under the car including subframe etc… carbon drive shaft, and finally got the rears powder coated and assembled. Waiting on pads and rotors. Then I guess the work begins!
XKxRome0ox wroteYeah it looks really compact yet solid. Only thing I forgot was that putting a magnet on my phone case will eliminate ability to use wireless charging at home...i use the same phone holder
probably the best one i have used so far
as it allows for multiple adjustments to really hold its position
PACarGuy wroteYou mean the metal plateYeah it looks really compact yet solid. Only thing I forgot was that putting a magnet on my phone case will eliminate ability to use wireless charging at home...
panda-R wrotegas price just went back up another 50 cents a gallon since a week agoGot gas and lit up the rear tires on 1-2 shift.
XKxRome0ox wroteDepending on the tire, you wouldn't be able to replace them either because of stock issues 🤣panda-R wrotegas price just went back up another 50 cents a gallon since a week agoGot gas and lit up the rear tires on 1-2 shift.
i can't afford to light up the rear tires
Vuu wrotealready been through thatDepending on the tire, you wouldn't be able to replace them either because of stock issues 🤣
XKxRome0ox wroteSame here, but I upgrade from my PS4S to Nankang CRS'sVuu wrotealready been through thatDepending on the tire, you wouldn't be able to replace them either because of stock issues 🤣
Michelin PS4S in my size was not available so I got Conti ECS instead
Vuu wroteFeeling super lucky with tires this last year.XKxRome0ox wroteDepending on the tire, you wouldn't be able to replace them either because of stock issues 🤣panda-R wrotegas price just went back up another 50 cents a gallon since a week agoGot gas and lit up the rear tires on 1-2 shift.
i can't afford to light up the rear tires
