SL55/63/65/R230 AMG: Angry SL (Updated exhaust)
That's what it sounds like now. Did a quick video of before and after, I'm scheduled to go get the CATs removed this weekend! Exciting! I can't wait to hear how much more pissed it's going to sound.
Your into tuning vehicles so I got a quick question for you, is there anyway to ALWAYS have the wastegates open? That way the SL ALWAYS has that aggressive sound. Like could I go into the computer via STAR or some program and tell the car to keep the wastegates open?
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Like, I notice it revs higher. The car idles at like 1200rpms (don't know exactly) when I first start it up, then after it dies down, it settles at like 600rpms (again, don't know exactly). I basically want to keep it up at 1200 ALL THE TIME. I'm pretty sure this can be changed with a computer.
Anyone know. I don't care about wasting gas, so if anyone knows how to do this I'd appreciate it! Thanks in advance!
the idle rpm's im sure could be changed by computer programming, but i have no idea what long term ramifications, if any, would exist from doing so.
the car sounds sick as it is with that new exhaust, i say leave the wastegates alone and let those turbos scream! god i love the sound of forced air induction!
There is a wastegate on our turbos .......(wastegate) in the turbo is operated by pressurized air... When pressurized air is introduced to the wastegate, it will open, enabling the exhaust gasses to escape and skip the turbo. This will result in a dramatic loss of boost, because there will be no gas which would spin the turbo.
Do you follow what "xavier55" was trying to tell you now?
If you left the wastegate "open" you'd never get boost to run your Turbo's essentially you'd be running Turbo-less
Sorry bud, do a little basic research on your car...
Edit: You beat me by a couple min lol... were on the same page though

the idle rpm's im sure could be changed by computer programming, but i have no idea what long term ramifications, if any, would exist from doing so.
the car sounds sick as it is with that new exhaust, i say leave the wastegates alone and let those turbos scream! god i love the sound of forced air induction!
Last edited by Thericker; Feb 27, 2009 at 02:45 AM.
What I was trying to asking was can it be over-ridden by the computer? So at idle, for example, the wastegates would open and the rpms would rise to the desired amount (this case, lets assume 1200rpms), and while I'm stopped (at a red light for example) it stays this way. Then when I take off the line, wastegate shuts off and the car continues normally, with the turbo's.
Hopefully this clears my question. I just want this at idle, then it shuts off when I take off.
Let me repeat myself so I don't get a lecture on Compression ratios of blowers, I just want to know if the computer in the car can engage the wastegate and raise the rpms while I'm at idle, then when I drive it drives normal.
We all on the same page?
That's what it sounds like now. Did a quick video of before and after, I'm scheduled to go get the CATs removed this weekend! Exciting! I can't wait to hear how much more pissed it's going to sound.

What I was trying to asking was can it be over-ridden by the computer? So at idle, for example, the wastegates would open and the rpms would rise to the desired amount (this case, lets assume 1200rpms), and while I'm stopped (at a red light for example) it stays this way. Then when I take off the line, wastegate shuts off and the car continues normally, with the turbo's.
Hopefully this clears my question. I just want this at idle, then it shuts off when I take off.
Let me repeat myself so I don't get a lecture on Compression ratios of blowers, I just want to know if the computer in the car can engage the wastegate and raise the rpms while I'm at idle, then when I drive it drives normal.
We all on the same page?

it may sound awesome to you but the wastegates are just a bypass around the turbo. you may as well just take the turbos off

And further insisting you do actually know ALL about Wastegates so please don't bother w/basics, only to ask what would happen if you kept Wastegates open while @ idle only
I'll say it again "Major Turbo-Lag"
Why are you going back and repeating yourself with the turbo-lag problem. This I understand. I never asked what would happen if you kept the wastegates open at idle only
Mabe you had a late night
but I never once brought up ramifications of any sort, I simply inquired how I can fool the computer to keep the wastegates open at idle. Why do you keep going back to turbo-lag when I keep saying I don't mind
That's what it sounds like now. Did a quick video of before and after, I'm scheduled to go get the CATs removed this weekend! Exciting! I can't wait to hear how much more pissed it's going to sound.

WOW,, sounds like a GERMAN PT BOAT,, not sure that is good though,,
why take off the cats, no performance gains and will sound even worse,,
just put racing cats on, like 200 cel,, high flow,, accomplishes same thing and will refine the sound at least slightly,
germans dont make nascars.. I dont think
why take off the cats, no performance gains and will sound even worse,,
just put racing cats on, like 200 cel,, high flow,, accomplishes same thing and will refine the sound at least slightly,
germans dont make nascars.. I dont think

I can't freakkin' wait! And actually, I would get quite the hp boost without the cats.

See attachment. It's slightly different now from the picture but the general layout is the same. Since I have such a big garage and no longer have the SL55 to occupy the other side, I decided to make it like a kick back spot. Me and my friends would usually hang out in the garage anyways, so we just made it comfy. Added a little TV, a PS2, a Mac G4 and it's now my favorite spot in the house.



