Renntech pushes the M157 V8 TT in a 2012 CLS63 AMG to 627 wheel horsepower - Billet turbo and transmission upgrades coming

what are the new mods?

how did they jump from 600 to 627?

sounds like BS to me

Originally Posted by Portman

how did they jump from 600 to 627?

sounds like BS to me

Of course it sounds like BS to you. You put more emphasis on crank dynos without timeslips to back them up then progressive improvements at the wheels on a dynojet with timeslips to match. It's amazing how your thought process works.

The details of the mods are on the graph, try actually looking at it.

Originally Posted by Portman

how did they jump from 600 to 627?

sounds like BS to me

Go post some more flywheel dynos.

Seriously...you are a piece of work. LOL!

Originally Posted by M3_WC

Go post some more flywheel dynos.

Seriously...you are a piece of work. LOL!

Major +1

RT revised calibrations are done in-house thus they can get improved power thru their own R&D. Also, if you want they can turn off ECO mode Stop/Start system for M278/M157 =)

Originally Posted by m54b25

RT revised calibrations are done in-house thus they can get improved power thru their own R&D. Also, if you want they can turn off ECO mode Stop/Start system for M278/M157 =)

There you go...

Originally Posted by m54b25

RT revised calibrations are done in-house thus they can get improved power thru their own R&D. Also, if you want they can turn off ECO mode Stop/Start system for M278/M157 =)

I'd give you a thumbs-up, but I don't have enough rep points.

Dammit seeing something like this pisses me off, if I had a tuner who could tune the N63 and have our V8TT right next to that or above it. Someone who has a clue needs to start tuning N63's. Anyways awesome job Renntech and it makes me jealous + I saw the N63 Renntech tune numbers and why are they sooo low? Lower than Dinans :-(

Originally Posted by Jimefam

Dammit seeing something like this pisses me off, if I had a tuner who could tune the N63 and have our V8TT right next to that or above it. Someone who has a clue needs to start tuning N63's. Anyways awesome job Renntech and it makes me jealous + I saw the N63 Renntech tune numbers and why are they sooo low? Lower than Dinans :-(

Hasn't Renntech started tuning BMW's. You should give them a call.

Originally Posted by Jimefam

Dammit seeing something like this pisses me off, if I had a tuner who could tune the N63 and have our V8TT right next to that or above it. Someone who has a clue needs to start tuning N63's. Anyways awesome job Renntech and it makes me jealous + I saw the N63 Renntech tune numbers and why are they sooo low? Lower than Dinans :-(

I think Renntech is just getting started on that. Also, it's clear to see where their tuning focus currently is.

Over 600 whp on a stock twin turbo v8, besides the intake and intercooler. This is still on stock downpipes correct, the cats would make a big difference in power too if removed. BEAST.

Originally Posted by fastgti69

Over 600 whp on a stock twin turbo v8, besides the intake and intercooler. This is still on stock downpipes correct, the cats would make a big difference in power too if removed. BEAST.

I don't think it's stock downpipes. I assume the cats are in the downpipes or right there and the cats have been modified. Maybe there are two sets.

Originally Posted by Sticky

I don't think it's stock downpipes. I assume the cats are in the downpipes or right there and the cats have been modified. Maybe there are two sets.

The CLS63 has one set of primary cats, no secondary cats. Definitely should see better gains going full catless.

Vivid Racing project CLS63, catless setup:

Attachment 15843
Attachment 15844
Attachment 15845

vivid racing? surprised..

Originally Posted by M3_WC

The CLS63 has one set of primary cats, no secondary cats. Definitely should see better gains going full catless.

Vivid Racing project CLS63, catless setup:

Attachment 15843
Attachment 15844
Attachment 15845

Well there we go, looks like they are right up front.

There are 2 cats inside each housing, from what I understand. I can find the post on another site if you want to see it: came from an owner who opened the cat housing.

Here's the quote: "you see it from outside as 1 primary cat, but inside there is 2 on each side.

the second O2 sensor is in the middle and there it is empty ( i saw it by my own eyes )

if anyone opened SLR exhuast, he will know what i am talikg about, because it is the same method, and i am sure it is less than 600 cell"

Originally Posted by Dueclaws

Here's the quote: "you see it from outside as 1 primary cat, but inside there is 2 on each side.

the second O2 sensor is in the middle and there it is empty ( i saw it by my own eyes )

if anyone opened SLR exhuast, he will know what i am talikg about, because it is the same method, and i am sure it is less than 600 cell"

Yes, you are correct. The M157 contains 2 ceramic monolith with a volume of 1.5L per side. Each catalytic front monolith has 600cpsi cel and the rear (after post-o2 planar sensor) 400cpsi cel.

Originally Posted by Dueclaws

I'd give you a thumbs-up, but I don't have enough rep points.

Thanks! Did same!