PoCoAMG

Want your opinions on this. I love my 2007 SL55 AMG. I love the power, looks, comfort, etc. I see so many people modding their SL's and I love following the threads. I want to keep mine stock because I have no complaints, but I do feel there are some items that can improve the car with little cost. I am thinking..

1) Shardul's Belt Wrap Kit. It just makes sense and I can feel the belt not engaging as quick as I would like.

2) Better air filters from K&N. Or another brand people have had success with?

3) Headers. I love the Eurocharged one's I see currently for sale. I would like to just have the manifolds breathe a little better.

4) Regular maintenance and over-the-top taking care of the car. Best fluids and regular maintenance. Really just looking after "Betty" and keeping her in top shape.

I bought a 2007 because I like the additional benefits from the slightly improved motor and I really love the Performance Package.

Cheers!

Shaun

euphoriaDSM

Start with a pulley, tune, and belt wrap kit. Also cut the secondary cats and resonators out, it won't be obnoxious loud but give the right battle cry when getting on it. If you need more after that then search for some headers and a FTP intake. Seriously the pulley and tune alone brings the 55 to life! I had a SL55 before my 65 and still miss the exhaust note.

BlownV8

What changes were made to the motor on the 2007 SL55?

okbarnett

try bmc filters and mbh headers or look at renntechs stuff then a ecu program

cal1

Long tube headers and tune. Best first mods IMO.

PoCoAMG

I see just a simple tune is good. I think the mods I listed may just make the stock motor a bit better (better engagement of the pulley, a bit more air flow and exhaust flow). Pulley and tune? It's just that little bit better. I get it. Cool

The 2007 has 510 HP and 531 torque (instead of 493/513). Upgraded supercharger. 80 mm throttle body instead of 74 mm. Slightly different tune to make up for the larger TB? (correct me if I'm wrong here).

Thanks guys.

Shaun

kittyandgary

I'd forgo the K & H filters. Anything that let's more 'air' through also lets more dust/contaminants through. I want VERY CLEAN air going through the precision supercharger, and into the cylinder bores.

Just my opinion - YMMV (your mileage may vary)!!

PoCoAMG

Isn't BMC a very good foam filter (no oiling). My car is a summer driven car only in Vancouver BC (similar to Seattle in climate) so little dirt (good roads here) but the best filter with most flow is what I'm after.

Shaun

Nor Cal SL55

I just did all of this to my 2007 SL55 less the headers, including every fluid, brakes, tires, a full service on anything I could think of. Some things may not have needed it yet, but I wanted to make sure everything lasts a while on this car. Good maintenance and clean fluids can't hurt. I've had the car almost 6 years and maintained religiously with all the "A" & "B" services and everything that was needed under warranty for the first 50K miles (had an extended warranty that expired a year & a half ago).
I also recently installed a 77mm clutched pulley, ECU/TCU tune. I did a base line dyno before I did anything and the car was pretty dang impressive stock. I am scheduling a dyno this coming week to get numbers after all this new work. We'll see what the differences bring.

Best of luck with your car!

Nor Cal SL55

542cc injectors too.

kittyandgary

Shaun,

Be careful with any filter that uses oil. IF the car uses a hot wire for airflow measurement in the Mass Air Flow component, that oil can - over time - coat the wire, producing incorrect measurements. Quite a few guys who had filters with oil treatment had that experience with the later model Porsche 928's.

BlownV8

Fortunately the 55/600/65 forced induction engines use a MAP sensor so it's not an issue on our cars.

okbarnett

Ive used bmc and k&n in every car ive had since the 80s and not had any problems. the bmc is either dry or dryer than k&n

kbob999

I went with the smaller SC pulley and belt wrap. That was all it needed to make it perform a 'little' better, especially at the altitude in Denver. Air filters are stock.

Otherwise all filters and fluids have been swapped, as well as the crank sensor, shift lever lockout, and all of those little things that can leave you stranded.

I have run K&N before on other vehicles, but also feel they can let some dirt through, and this vehicle wants none of that!

sgaar

If the OP wants more, get a 65!

PoCoAMG

....and the price was too good for this SL55

I'm good with the power, just trying to improve upon perfection (to me anyway). Best car I have owned...

sgaar

Hey, as long as you enjoy and your are then all is

Hopefully the good weather has come to your part of the world.

Noir230

I got my SL55 in March. I have put in K&N filters, replaced the spark plugs, got TCU and ECU tunes and a smaller SC pulley from Eurocharged and installed an oil catch can. The improvement in power is really noticeable and I'm happy with the money I spent.


I'm now thinking about a Quaife or Wavetrac LSD. Just trying to decide between the two.

carguyshu

The K&N will provide little if any gains, particularly on a stock or near stock car given that the air intake system is so well designed. For 1 or maybe 2 hp its not worth the risk of sending dirtier air into the engine.

sgaar

We had a Quaife group buy back in the fall and ended up getting them form the official re-seller in the UK. If you look around you will find that there is a company in the US that is selling Quaife LSDs but it is an older rev. that was initially designed for some GM cars. They just happen to fit some M-B diffs as well.

I don't know about Wavetrack but I would advise that if you do decide for Quaife, that you look at Birds Auto in the UK. James Bird is the guy we talked to.

carguyshu

The diffs were from SRT dodge/Chrysler products & not GM if memory serves me right.

Noir230

I have had K&N filters on two of my cars for years and have not seen any indication of dirt getting into the engine.


Thank you. I sent an email to Bird's.

carguyshu

Does that mean you tore down the engine & inspected it with gauges? You can run a car with no filters for a long time & it not appear to have any damage or indication that dirt got in. Try running a k&n in one side & an oem filter in the other & see how much more dirt the oem filter stops from getting into your motor.

Noir230

No I haven't, but since you are the one making the assertions, what research have you done, or what studies can you cite, to show that dirt is getting into the engines? Have you had K&N filters and have you had a bad experience with them?

sgaar

Yep, that's the one.