So I have hit the ceiling. Eurocharged, Intake, TB, Exhaust. I hate my sprint booster as it makes the car almost impossible to drive. Just a little more punch and I think I'd be happy with the car. Has anyone come up with a way to add 10-20 more HP.

I had some Ideas.

I don't want to do nitrous on my 145K car. It may explode!

Is there anyway that eurocharged can design a winter map to better utilize colder, denser air? Has anyone found a Tuner that can squeeze a little more out of our 3.2?

I haven't got a MB engine cover yet to keep the temp of the CAI pipe lower. Has anyone noticed that this engine cover helps to prevent heat soak?

Did I mention that I hate my sprint booster?? Expensive mod that seems to ruin the drive-ability of the MT.

 

There isn't much that can be done, certainly nothing that won't cost an arm and leg. However, if you have the means, check the web for some German made cams. A little more lift and duration might add enough ponies to make you happy but it will be at the expense of decreased gas mileage. It should be noted that this little engine 195 cu in is one of the most efficient engines MB ever built

 

I'd take a donation of your sprint booster

 

I have a single CAI, I once wrapped it in silver foam backed adhesive insulation I got from Home Depot using some silver insulation tape.
The end result was that it slowed down the heat soak and the IAT ran cooler for a period of time, but after 20 minutes or so it didn't matter.
It was so ugly looking, I took it back off.

I went so far as to buy an extra H.E.A.T pump ( the one that circulates coolant with the car turned off ) and was gonna buy a small intercooler radiator and some copper pipe and wrap the pipe around the CAI.
During all my research, I found that lowering the intake air temperature a few degrees made no drastic difference in HP, only if you can get it in the 40 degree and below range does it matter. This, I decided, was a low return for effort project and dropped it.

 

It won't give you any more H.P. but finding a better gear will make it "feel" like it's got more HP.
Biggest hurdle to over come is finding a Mercedes differential with a lower gear ratio that fits, and getting the car's computer to learn to play nice with it.

Have you ever taken your car to the drags? It would be interesting to hear how much of an improvement all the mods that you've already made have lowered your ET's.
Best "Magazine" Road Test time for a "stock" 6 sp."Coupe" was 14.7 sec. Being a roadster, it might be just a little slower due to additional weight and being less aerodynamic.

Some people have tried larger injectors, but I'm unfamiliar with the results.
Installing a pair of 225/50/16" rear tires will cut 3/10's of sec. off a "stock" 3.2 V6 in the quarter mile. Improving your acceleration by 3/10's should feel like an extra 20 HP. Just find a 2003 SLK320 in a salvage yard and buy the wheels.
Good Luck

 

Don't you still have stock wheels??
Change to rotoformed wheels.
Every 1 pound removed of rotational weight equals around 10 pounds of static weight, u can get the rear wheels on rotoformed wheels as low as 18 lbs apiece, just say if u get 22 pound rear wheels, savings of 14 pounds is like shaving 140 pounds of the car.
Tsw has the best priced rotoformed wheels I have found.
I am waiting for the tsw bathurst to come out next year in 19x10.5

 

Wheels are a good idea.... but it's looking like $1000 in wheels. Then tires....

 

Yeah, "Performance" ain't cheap.

Watch the internet for sales, and or used wheels. Or check out "Salvage Yards" like LKQ for smaller, lighter Mercedes wheels.

By the way, the improvement in 1/4 mile times I mentioned were documented in Motor Trend magazine in a comparison road test between an 04 Crossfire automatic, and a 03 SLK320. Even though the SLK weighed more, it was faster, just because or the lighter weight wheels.
At least 16 and 17" tires are usually a lot cheaper to buy than 19", and a good used set of smaller aluminium Mercedes wheels shouldn't cost ya more than 400 or $500 I would think.
Ya might even get lucky and find some that still have some decent tires on them.

 

I'd like to see someone develop an new filter for the Crossfire Cold Air Intake. Something that could be installed universally on any intake once it made it to the front of the radiator. I'm thinking something flat and triangular that could run the length of the grill and catch air from one side or both. It would look like an small inter cooler of filter.

Once I saw a mushroom style filter with 2 filters on one pipe. If you had one one each side of the grill with a duct in between, it may let in more air. They would definitely look cool! Just need to angle them so they face forward.

This made me think that the triangle shaped box of filter with a port on one side might be easier to lock in place behind the grill.