Exhaust issues
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Exhaust issues
Hi guys,
I have a MK1 escort fitted with an s2000 engine. I done the conversion myself and at the time just mated it to my standard 2" exhaust system. Just been for a rolling road to see if the exhaust is restricting things and it seems it is.
I only hit 195bhp at the fly.
Replacing the exhaust with a 2.5 or 2.75" exhaust is not a problem. However I have got some queries about the CEL and lambda sensors. What is the size of an OEM exhaust anyway? What size are the popular aftermarket ones?
I am running just the pre cat sensor on my car, as I didn't have another sensor to put into the exhaust. Will this cause an issue for the ECU to pull things back abit? Should I be running the post cat sensor too? If so do I run the CEL fix as spacer or not?
I cant read my ECU codes as I can't find a decent OBD2 pin out for an s2k to wire one into my car. So I'm stuck with an EML that I can't diagnose
I have a MK1 escort fitted with an s2000 engine. I done the conversion myself and at the time just mated it to my standard 2" exhaust system. Just been for a rolling road to see if the exhaust is restricting things and it seems it is.
I only hit 195bhp at the fly.
Replacing the exhaust with a 2.5 or 2.75" exhaust is not a problem. However I have got some queries about the CEL and lambda sensors. What is the size of an OEM exhaust anyway? What size are the popular aftermarket ones?
I am running just the pre cat sensor on my car, as I didn't have another sensor to put into the exhaust. Will this cause an issue for the ECU to pull things back abit? Should I be running the post cat sensor too? If so do I run the CEL fix as spacer or not?
I cant read my ECU codes as I can't find a decent OBD2 pin out for an s2k to wire one into my car. So I'm stuck with an EML that I can't diagnose
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The dyno run was at the fly. I asked him for @wheels but he already had it set up for everyone's else's at the fly. It was a RR day thing.
I would be happy with 195bhp at the wheels.
Any info on the lambda sensors?
I would be happy with 195bhp at the wheels.
Any info on the lambda sensors?
Joined: Jul 2014
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From: Chesterfield VA
A healthy AP1 engine should easily show 195bhp at the wheels thru the Honda drive train. Wheel horsepower is all that can be measured without putting the engine on a stand so any "flywheel" reading taken off the wheel readings is a WAG with lots of assumptions.
AP1 header is a nominal 57mm and feeds nominal 60mm exhaust piping. Bigger exhaust piping is a constant discussion here. Just slapping on a 70mm system at the header seems to not achieve desired results due to exhaust pulsing, back pressure, and other things I don't understand.
Torque suffers. And horsepower is merely a mathematical formula based on torque. Better results seem to happen with a smooth transition of exhaust diameters. There are some nice header sets available that will feed a 70+mm exhaust efficiently. Nice meaning expensive.
-- Chuck
AP1 header is a nominal 57mm and feeds nominal 60mm exhaust piping. Bigger exhaust piping is a constant discussion here. Just slapping on a 70mm system at the header seems to not achieve desired results due to exhaust pulsing, back pressure, and other things I don't understand.
Torque suffers. And horsepower is merely a mathematical formula based on torque. Better results seem to happen with a smooth transition of exhaust diameters. There are some nice header sets available that will feed a 70+mm exhaust efficiently. Nice meaning expensive.-- Chuck
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