Base line dyno run for C43
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From: CH = Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Looks nice 
If I see right, you sandwich the brown gasket between two grey ones. Might consider this during the winter together with some heat insulation of the air box 
Does the kit come with the 6 gaskets?
If I see right, you sandwich the brown gasket between two grey ones. Might consider this during the winter together with some heat insulation of the air box Does the kit come with the 6 gaskets?
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From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
Yes the kit comes with the gaskets and they are OEM gaskets as well. The brown piece is the phenolic spacer.
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From: Portland, OR
99 c43 / 99 ml430
i really appreciate the mod + dyno service you are providing.. thanks for doing it this way it really adds some nice data to the mix. Hope those headers and spacers give a nice boost.
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From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
I am not expecting much from the phenolic spacers but the headers, X pipe, high flow cats and ECU tune should really add some scoot
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From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
UPDATE:
This is the 2nd day I have missed Fedex with my Kleemann headers. They are going to try again tomorrow and I will be here for SURE.
I will post pics once I receive them
This is the 2nd day I have missed Fedex with my Kleemann headers. They are going to try again tomorrow and I will be here for SURE.
I will post pics once I receive them
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From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
UPDATE:
KLEEMANN HEADERS HAVE ARRIVED!!!
Now I have to have the short piece extended and then send them out to be coated before they are installed.
KLEEMANN HEADERS HAVE ARRIVED!!!
Now I have to have the short piece extended and then send them out to be coated before they are installed.
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From: SCV SoCal
2002 CLK430
uh oh . . . . . you do know the road you're on has no u-turns, right? This particular mod is going to make a difference. A difference you should feel because the engine will actually breathe. It's not like the first time you go wide open on a zx10, sit in GOOD SEATS at a Laker game, or fly in a private jet, but still, it's a noticible difference and I doubt you're going back.
Your next PM could be "Yo, uh, ProjectC55, exactly whats needed for that 55 swap . . . . cause, you know, I need another real hit."
Your next PM could be "Yo, uh, ProjectC55, exactly whats needed for that 55 swap . . . . cause, you know, I need another real hit."
Speaking of 55, Vince might be figuring out the problem isn't the 55 at some point today.
Last edited by MarcusF; Oct 29, 2011 at 10:49 PM.
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Thread Starter
MBWorld Fanatic!
Joined: Apr 2010
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From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
UPDATE:
Phenolic spacers have been installed, It feels like I lost some torque down low around 2000 RPM or lower but it feels like I picked some up above 3000 RPM as it really kicks around 3000RPM-3500RPM and it just keeps pulling to red line.
I am going to schedule a dyno run for the week after next. I will post the dyno results once I have them
Next up:
Kleemann headers, X pipe, 300 cell high flow Metal'Cats
Phenolic spacers have been installed, It feels like I lost some torque down low around 2000 RPM or lower but it feels like I picked some up above 3000 RPM as it really kicks around 3000RPM-3500RPM and it just keeps pulling to red line.
I am going to schedule a dyno run for the week after next. I will post the dyno results once I have them
Next up:
Kleemann headers, X pipe, 300 cell high flow Metal'Cats
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UPDATE:
Phenolic spacers have been installed, It feels like I lost some torque down low around 2000 RPM or lower but it feels like I picked some up above 3000 RPM as it really kicks around 3000RPM-3500RPM and it just keeps pulling to red line.
I am going to schedule a dyno run for the week after next. I will post the dyno results once I have them
Next up:
Kleemann headers, X pipe, 300 cell high flow Metal'Cats
Phenolic spacers have been installed, It feels like I lost some torque down low around 2000 RPM or lower but it feels like I picked some up above 3000 RPM as it really kicks around 3000RPM-3500RPM and it just keeps pulling to red line.
I am going to schedule a dyno run for the week after next. I will post the dyno results once I have them
Next up:
Kleemann headers, X pipe, 300 cell high flow Metal'Cats
looks like your c43 is being a guinea pig when you test certain performance parts on your car.
do you ask the seller about pro/cons when you buy all these part?
what does he tell you, do you gain any power and better performance?
it ain't fun getting ripped off wasting money on junk!
good luck bud.
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From: CH = Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
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From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
Another thing I forgot to mention was that my intake manifold was luke warm after driving for about 40 minutes doing several high speed pulls where before my manifold burned my hand after 30 minutes of normal driving.
Last edited by 503C43 ////AMG; Nov 3, 2011 at 02:09 PM.
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From: CH = Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
If that is really the case, guess that could be a nice and not too expensive upgrade 
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From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
UPDATE:
Headers are going in for modification tomorrow and then sent out to be swain coated. I will post pics after the modifications and after I receive them back from being coated. My exhaust guy said he could make a custom X pipe for me, I might go this route instead of the magnaflow X pipe.
Talking with my exhaust guy he expressed some concern regarding extending the O2 sensors. He said extending them may change the resistance and in turn throw a CEL, can anyone clarify this for me??
Headers are going in for modification tomorrow and then sent out to be swain coated. I will post pics after the modifications and after I receive them back from being coated. My exhaust guy said he could make a custom X pipe for me, I might go this route instead of the magnaflow X pipe.
Talking with my exhaust guy he expressed some concern regarding extending the O2 sensors. He said extending them may change the resistance and in turn throw a CEL, can anyone clarify this for me??
Thread Starter
MBWorld Fanatic!
Joined: Apr 2010
Posts: 4,437
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From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
UPDATE:
Headers are going in for modification tomorrow and then sent out to be swain coated. I will post pics after the modifications and after I receive them back from being coated. My exhaust guy said he could make a custom X pipe for me, I might go this route instead of the magnaflow X pipe.
Talking with my exhaust guy he expressed some concern regarding extending the O2 sensors. He said extending them may change the resistance and in turn throw a CEL, can anyone clarify this for me??
Headers are going in for modification tomorrow and then sent out to be swain coated. I will post pics after the modifications and after I receive them back from being coated. My exhaust guy said he could make a custom X pipe for me, I might go this route instead of the magnaflow X pipe.
Talking with my exhaust guy he expressed some concern regarding extending the O2 sensors. He said extending them may change the resistance and in turn throw a CEL, can anyone clarify this for me??
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500hp+ IS300
UPDATE:
Headers are going in for modification tomorrow and then sent out to be swain coated. I will post pics after the modifications and after I receive them back from being coated. My exhaust guy said he could make a custom X pipe for me, I might go this route instead of the magnaflow X pipe.
Talking with my exhaust guy he expressed some concern regarding extending the O2 sensors. He said extending them may change the resistance and in turn throw a CEL, can anyone clarify this for me??
Headers are going in for modification tomorrow and then sent out to be swain coated. I will post pics after the modifications and after I receive them back from being coated. My exhaust guy said he could make a custom X pipe for me, I might go this route instead of the magnaflow X pipe.
Talking with my exhaust guy he expressed some concern regarding extending the O2 sensors. He said extending them may change the resistance and in turn throw a CEL, can anyone clarify this for me??
You should just eliminate the cats all together, especially when you are doing little mods like intake manifold spacers and such. If your trying to squeeze every last HP you can out of the C43 (aren't we all), then just eliminate the cats, definitely a few horses to be had there.
If your state does emissions testing, you will still pass because there won't be a CEL since you are fooling the O2 sensors. When they smog OBD-II cars, they just plug them into a computer and pull the CEL codes if any (which there won't be). They don't physically sniff the exhaust like they do with OBD-I cars.
EDIT: I misread your post, I didn't know he was going to be extending the wiring for the O2 sensor, I thought the concern was sensor placement in the exhaust stream.
The wiring on my downstream O2 sensor was all eroded away down to bare wires, so I had to cut the wires at the plug and at the sensor and soldered in new wire, I also had to extend it a little when I had my cats deleted and new O2 bungs welded in. I didn't have a problem. I doubt you will either as long as he isn't adding 5 feet of wire to the sensor Ha!
Last edited by yamadjs08; Nov 8, 2011 at 01:37 PM.
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2015.5 Volvo V60 Polestar
Thread Starter
MBWorld Fanatic!
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From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
UPDATE:
After talking with my exhaust guy we decided it would be best to modify the headers on the car so we can be sure that everything is done properly before we send them out to be swain coated.
I have scheduled to drop my car off on Tuesday of next week and pick it up on Wednesday. The headers should take about 2 weeks to get coated and come back and then another day installing them with the rest of the exhaust. I should have the exhaust completed by the first week of December.
After talking with my exhaust guy we decided it would be best to modify the headers on the car so we can be sure that everything is done properly before we send them out to be swain coated.
I have scheduled to drop my car off on Tuesday of next week and pick it up on Wednesday. The headers should take about 2 weeks to get coated and come back and then another day installing them with the rest of the exhaust. I should have the exhaust completed by the first week of December.
Thread Starter
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From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
No snow this year please, I would like to enjoy my C43 and it's new found power...
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2001 E430
As for extending the o2's I was having intermittent CEL's after extending them. I sent the ECU to Kleemann and Cory turned them off permanently. He was kind enough to do this for just the cost of shipping. I've since passed emissions testing with no issues.
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98 C43, 15 Alfa 4C LE, 18 Tesla Model 3 DM Perf, 08 Duc S1000, 02 Duc 998, 98 Duc 748, 01 Miata
Here is a cut out from a conversation I had with Cory:
Your O2 sensor varies resistance based on the exhaust gasses and that is what is actually read by the ECU. All electrical wire has some level of resistance, so if you use too small of a wire gauge, it will add to the resistance (resistance is added in series) being shown by the O2 sensor and throw the reading off. If it throws it off enough, it will throw a check engine light. I can't see the downside of going with too large of a wire, but I may be missing something.
Depends entirely on which ECU you have. If your car has ME2.8 (VERY unlikely, it would have to be a late 2001 production), I can do the coding for you no problem, but if it's ME2.0, the only way to keep the check engine light off is to have a TUNE file written which disables the readiness monitors for O2, O2 heater and catalyst. In many states, this means you won't pass emissions. You can also try to relocate the secondary O2 sensors behind the secondary cats- this sometimes works, and sometimes doesn't, and it's important to use a thick gauge wire (12 gauge) and to lengthen each wire one at a time, rather than cutting all of them at the same time, as this is a 4 wire sensor which has 2 white wires- the polarity of the white wires does matter. Wether or not doing this is successful is directly related to how well the wiring is done.
Last edited by ECTurboGSX; Nov 8, 2011 at 07:13 PM.
