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  1. ray d

    SLK 55 AMG At MSL Performance !

    Good sound change but go straight throu with the bypass valves and you will not believe the noise
  2. ray d

    Slk 55 r172 exhaust down pipes

    bump:bannana:
  3. ray d

    MAIN CATS REMOVAL advice re sensors

    That is great I understand now, perhaps I would be best leaving it alone as it is still under warantee and I am pretty sure when it is in for service they put any updates in to the ecu so it might overwrite any mod. I was hoping that maybe the car might show up a fault but drive ok then I would...
  4. ray d

    MAIN CATS REMOVAL advice re sensors

    Checked the links and I am afraid it all went over my head :dk: It would be great if someone who has done it could come in and say if it either worked or not. I will wait in hope
  5. ray d

    Amg which tyres seem to be best

    I was going to ask about eagle f1 tires as I had them on my TVR and I liked them but thought they would not be about any more as that is going back 7 years ago. Just googled Goodyear Asymettric 3 and they came up. Tread pattern a lot different but would suit as they look much like the conti's...
  6. ray d

    Amg which tyres seem to be best

    Hi all, I am sure this has been discussed before but anyway I am running a 55 amg and have done 9k on it ant 2k was running it in. I looked at the rears and am down to the limit which I know it to much right foot but are there any views on the best all round tyres for them. I am using...
  7. ray d

    MAIN CATS REMOVAL advice re sensors

    So far that all sounds good. I bought a second hand set of down pipes to take the secondary cats out (which I have done) but against the wife's wishes there is still more "V8 sound" in there and I WANT IT. I will be able to put the original down pipes back and rear section in when car is in for...
  8. ray d

    MAIN CATS REMOVAL advice re sensors

    Hi all I am sure this has been talked about before but I cant find anything but I am thinking of removing the main cats on slk 55 R172 but am not sure what will the sensors pick up and are they going to show up faults. Has anyone done this and had they any problems. Thanks Ray
  9. ray d

    PRIMARY / SECONDARY CAT REMOVAL need advice who has done it

    Evening digging the hole deeper. Have put the pipe in the for sale section which has pleased her but I have not told her I have ordered 2 by-pass valves for it from power flow so I switch it on when I want it There will be "hell to pay" the first time she hears it. but what can she do???? TAKE...
  10. ray d

    Slk 55 r172 exhaust down pipes

    I am selling 2 down pipes with the secondary cats removed but the work cannot be seen when on the car to keep Mr MOT man from seeing anything. pipes have 21k on them. Came off a 2012 R172. It means you have the originals for the car encase emission rules get tighter in the future. Easy to fit as...
  11. ray d

    PRIMARY / SECONDARY CAT REMOVAL need advice who has done it

    got it in today and I may have over done the mods a bit. It has increased the noise but I wish I done this first before I had a power flow exhaust system custom made for it. The wife has spoken volumes by saying nothing and just shaking her head. I will live with it for a while and see if the...
  12. ray d

    PRIMARY / SECONDARY CAT REMOVAL need advice who has done it

    That will be a lot of welding to seal that one up. Have just stopped for a "coffee fix". 1 in 1 to go. Thankfully the header to down pipe bolts have loosened
  13. ray d

    PRIMARY / SECONDARY CAT REMOVAL need advice who has done it

    Getting the better of me so googled the numbers on box Mainly on German sites but it is a cat but it is not what I expected. Perhaps a secondary does not have to catch as much what ever they catch as a primary cat does (am guessing now but at least I know it is a cat)...
  14. ray d

    PRIMARY / SECONDARY CAT REMOVAL need advice who has done it

    I got ""x pipe from power flow, The "thing" is def standard, I have checked it with the original one still in the car even down to the letters and numbers on box and I just know by the welds etc it had not been touched. I am surprised that no one has come across this before. It would be...
  15. ray d

    PRIMARY / SECONDARY CAT REMOVAL need advice who has done it

    I am sure it is standard, I have checked it with the one on the car, I have not touched the main cat due to the MOT in a few years. Everybody talks about the sec cat is for emissions in the USA. here is a pic of the "thing" cut open. I am prity sure you will not see the opening when re welded as...
  16. ray d

    PRIMARY / SECONDARY CAT REMOVAL need advice who has done it

    I took the cats out of one of my TVR.s and it was like a honey comb and that is what I was expecting but when I cleared the hair out of this it has a pipe with holes in it and you could put a screw driver handle right throu it from one end to the other so it is def not a cat. I am surprised no...
  17. ray d

    PRIMARY / SECONDARY CAT REMOVAL need advice who has done it

    No I took the resonator out and replaced it with the x pipe. Opened the last box on the front pipe (main cat just below the header with the 2 sensors and then the round box about the size of 2 bean tins end to end) just before the joint. Cant remember if my 171 was loke this but perhaps I should...
  18. ray d

    PRIMARY / SECONDARY CAT REMOVAL need advice who has done it

    Hi I bought the front pipes to take out the secondary cat and opened it up today and I thought the car had sucked in a pussy cat as all is in it is hair. I am doing it to get a bit more of V8 noise but am now wondering if I have wasted my money. Is there anyone who has removed the "cat hair" and...
  19. ray d

    MAIN / SECONDARY CAT REMOVAL who has done it and advice please

    Hi I bought the front pipes to take out the secondary cat and opened it up today and I thought the car had sucked in a pussy cat as all is in it is hair. I am doing it to get a bit more of V8 noise but am now wondering if I have wasted my money. Is there anyone who has removed the "cat hair" and...
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