Installed GT-Pro X-Pipe.. throttle lag?
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Joined: Mar 2011
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From: Huntington Beach, CA
c63, 11 e350 (DD)
Installed GT-Pro X-Pipe.. throttle lag?
hmm, I don't know it it's possibly the different "tone" that's throwing me off, or not. But I feel like the throttle response got slower. Maybe I need to have the car get used to it? Any way to "reset" the computer to start from fresh?
Thread Starter
Super Member
Joined: Mar 2011
Posts: 525
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From: Huntington Beach, CA
c63, 11 e350 (DD)
btw, I may have confused you guys, I didn't complain about loss of power (actually feels a little quicker), I was complaining about the throttle response, didn't feel as sensitive as it did before.
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2009 c63, 2010 E63
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MBWorld Fanatic!
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From: Sydney, Australia
Vath ML63 Brabus C63 SL63 CLK63BS C63BS
I had an xpipe/kiss pipe put into my SL63 and it dramatically changed the tone (not aggressive enough now and lower decibels) but it really changed the low down torque on the butt dyno. I am never trust the butt dyno but it was a bit of an experiment and i didnt know what to expect so i discount the placebo effect....just need to get the aggressive tone back now, maybe reduce resonator size i think
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Joined: Jan 2007
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From: Orange County
2006 E55
Just installed an X Pipe on mine that replaced the rear cats.
The comparisons were all done at the same dyno/time of day, weather and within 2-3 weeks of each other. Its a Dynojet so it reads a bit high in IMO. Minus about 10HP/Tq for an SAE type reading. The dyno sheet shows Run #002 that is the best out of three with no mods/stock....#005 is best out of three with the X Pipe. #009 is after a local tune.
It takes 3-4 pulls for the adaptives to take place, that is why I take best out of three.
It actually sounds like it is pulling a bit on the intake, which is probably some resonate pulse caused by the X during overlap....IMO.
The comparisons were all done at the same dyno/time of day, weather and within 2-3 weeks of each other. Its a Dynojet so it reads a bit high in IMO. Minus about 10HP/Tq for an SAE type reading. The dyno sheet shows Run #002 that is the best out of three with no mods/stock....#005 is best out of three with the X Pipe. #009 is after a local tune.
It takes 3-4 pulls for the adaptives to take place, that is why I take best out of three.
It actually sounds like it is pulling a bit on the intake, which is probably some resonate pulse caused by the X during overlap....IMO.
Last edited by sgtstanko; Jun 30, 2011 at 06:18 PM.
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
Just installed an X Pipe on mine that replaced the rear cats.
The comparisons were all done at the same dyno/time of day, weather and within 2-3 weeks of each other. Its a Dynojet so it reads a bit high in IMO. Minus about 10HP/Tq for an SAE type reading. The dyno sheet shows Run #002 that is the best out of three with no mods/stock....#005 is best out of three with the X Pipe. #009 is after a local tune.
It takes 3-4 pulls for the adaptives to take place, that is why I take best out of three.
It actually sounds like it is pulling a bit on the intake, which is probably some resonate pulse caused by the X during overlap....IMO.
The comparisons were all done at the same dyno/time of day, weather and within 2-3 weeks of each other. Its a Dynojet so it reads a bit high in IMO. Minus about 10HP/Tq for an SAE type reading. The dyno sheet shows Run #002 that is the best out of three with no mods/stock....#005 is best out of three with the X Pipe. #009 is after a local tune.
It takes 3-4 pulls for the adaptives to take place, that is why I take best out of three.
It actually sounds like it is pulling a bit on the intake, which is probably some resonate pulse caused by the X during overlap....IMO.
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Joined: Jan 2007
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From: Orange County
2006 E55
I agree......I hate the fact that no tuner actually readjust fuel on the spot. A real tuner can actually make changes to the air fuel during a dyno session. MB tuners are not at that point......every tune sold by all of them is a one shoe fits all because it worked on some other random engine.
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
I agree......I hate the fact that no tuner actually readjust fuel on the spot. A real tuner can actually make changes to the air fuel during a dyno session. MB tuners are not at that point......every tune sold by all of them is a one shoe fits all because it worked on some other random engine.
Your results for the tune file do look very good but I would not be happy with the AFR especially at high rpm. It looks like you have a lean cruise file...LOL.
They are going to be able to adjust your AFR for you are they not? If not I would suggest that you find someone who can.
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Joined: Jan 2007
Posts: 294
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From: Orange County
2006 E55
Your results for the tune file do look very good but I would not be happy with the AFR especially at high rpm. It looks like you have a lean cruise file...LOL.
They are going to be able to adjust your AFR for you are they not? If not I would suggest that you find someone who can.
They are going to be able to adjust your AFR for you are they not? If not I would suggest that you find someone who can.
