austinholloman

Was out the other night and a heavily modded ISF wanted to run. I chased him for a second and then grew up and let him go but I was hanging in there pretty good. Do you guys think a C55 with intake, long tube headers, exhaust and a tune could run down a stock ISF from a roll? The stock numbers are pretty close to our cars stock. Thoughts?

https://youtu.be/D94L8KEKoeU

Accidental L8 apex

I'd say from a roll, we should have an edge since we make so much torque down low, but it'll be close either way.

austinholloman

I wish our cars came with the 7 speed tranny in the slk55. I never understood why our cars got skipped on that. The slk55 has the exact same motor.

insame1

because c class.

austinholloman

The E55 got it too though...

insame1

again that is not a c class. c was the lowest end MB you can get in the USA at the time.

austinholloman

Let me rephrase, the E55 has our exact same 5 speed and cost more new than a SLK55.

winks911

It so happen I had an encounter with one 2 weeks ago
as soon as we stepped on it he knew he made a huge mistake...
All he kept asking after we met later was ....
What is RENNtech?

austinholloman

What kind of power is your car putting down on the dyno with your setup? If you don't mind telling me, why did you choose the RENNtech SC over Kleemann?

winks911

On the third dyno run we were up to 496 then we were having some kind of issue no being able to run out the gear
turned out to be a bad maf sensor and that was without the renntech intake.
I'm also now running ported polished heads with
MBH headers. ill get it back to the dyno soon if the car does not get sold before as I don't have time to drive it.

The reason for the renn oner klee was less power but better longterm reliability unless you install a non amg engine with kleeman charger, why is that ? lower compression ratio.
If you can afford it forget all this and get an E55 or an E55
swap. From what I've seen its a lot of work but the best hp for the money in return.
But here's the weirdest thing my fuel is sometimes 7.5 liters per 100km.

tw2

The 7-speed at the time could not take the torque from the E55. I'm sure they would have used it if they reliably could. Even the M156 E63 with the early 229.7 was pretty close to the limits and only used because of the marked torque decrease from the E55 as the engines changed.

CLK55 also didn't get the 7-speed which is slightly more difficult to explain as I thought it was supposed to be coupe equivalent to the E-class (definitely not the same interior quality). The SLK55 also needed the 7-speed's better ratios to be faster than the earlier SLK32 which was lighter and made almost the same power.

austinholloman

I don't like the size of the E55 or the suspension. I'll put every bolt on I can on my C55 and then buy a C63 in a few years. If I find a used SC, I'll think about it.