What did you do with/to your Boxster today?

[Jgkram]

Dave, that's a great question. As an engineer I was trained to ALWAYS speak with data. Any comment I offer now needs to be taken with a grain of salt. I deleted the cats primarily for weight loss. It's the best approach to achieve performance gains. I'm a cyclist as well and strength to weight ratio is everything. These engines are well tuned from the factory so "modifying" more horsepower into them without a tune or significant engine work, well...just doesn't work well. Ergo, lose some weight.

So to finally answer your question, there are three things that I "noticed". First, the sound is definitely different. Not significant but subtle, as in deeper. Not sure why that would be??? Second, it "seems" to be a little quicker. Take this comment with caution as I could be simple mashing the pedal a little harder or my mind is probably playing tricks. Lastly, there is MUCH more room underneath the car to get the things. It was amazing how much room it opened up. Those are my thoughts for now.

[Ciao]

Originally Posted by Jgkram

Dave, that's a great question. As an engineer I was trained to ALWAYS speak with data. Any comment I offer now needs to be taken with a grain of salt. I deleted the cats primarily for weight loss. It's the best approach to achieve performance gains. I'm a cyclist as well and strength to weight ratio is everything. These engines are well tuned from the factory so "modifying" more horsepower into them without a tune or significant engine work, well...just doesn't work well. Ergo, lose some weight.

So to finally answer your question, there are three things that I "noticed". First, the sound is definitely different. Not significant but subtle, as in deeper. Not sure why that would be??? Second, it "seems" to be a little quicker. Take this comment with caution as I could be simple mashing the pedal a little harder or my mind is probably playing tricks. Lastly, there is MUCH more room underneath the car to get the things. It was amazing how much room it opened up. Those are my thoughts for now.

I agree with that these P cars are engineered almost perfect from the factory and making them fast is cheaper and more effectively done by dropping weight.
Questions: 1. Do you have issues with passing emissions from dropping the Cats? (2) what was the purpose of wrapping the exhaust and what wrapping used?

[Qckslvr]

Originally Posted by Ciao

I agree with that these P cars are engineered almost perfect from the factory and making them fast is cheaper and more effectively done by dropping weight.
Questions: 1. Do you have issues with passing emissions from dropping the Cats? (2) what was the purpose of wrapping the exhaust and what wrapping used?

I can answer the emissions part.

I dropped the entire catalytic system and installed headers with pipes. After a tune the car picked up about 30hp. I live in CA so I have to deal with emissions. I installed ARP header studs. This makes dropping the headers, and swapping the cats in for smog about a 1 hour job for me. (I installed all new O2 sensors when I put the headers on) As for the check engine light, I use FVD Brombacher O2 sensor extenders/mini cats. This tricks the secondary sensors into thinking there are cat converters.... No CELs

When installing the headers I wrapped the P/S line, and the coolant hose. The headers are really close to them.

[Ciao]

Originally Posted by Qckslvr

I can answer the emissions part.

I dropped the entire catalytic system and installed headers with pipes. After a tune the car picked up about 30hp. I live in CA so I have to deal with emissions. I installed ARP header studs. This makes dropping the headers, and swapping the cats in for smog about a 1 hour job for me. (I installed all new O2 sensors when I put the headers on) As for the check engine light, I use FVD Brombacher O2 sensor extenders/mini cats. This tricks the secondary sensors into thinking there are cat converters.... No CELs

When installing the headers I wrapped the P/S line, and the coolant hose. The headers are really close to them.

Thanks Qckslvr; these thoughts will come in handy; 30hp gain! that is impressive...which tune? We only have 91 octane at Mile High (Denver) unless you purchase race gas 100 octane @ $9.40/gallon

[Qckslvr]

Originally Posted by Ciao

Thanks Qckslvr; these thoughts will come in handy; 30hp gain! that is impressive...which tune? We only have 91 octane at Mile High (Denver) unless you purchase race gas 100 octane @ $9.40/gallon

wish I could tell you the tune, it was done by S-Car-Go in San Rafael, CA