3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
First of all I wana thank you guys for your imput on my "Hi flo cat" thread.
I gutted my Cat this Saturday and I am amased at the performance improvement. Best of all it cost maybe $5.00. Welding wire, two cut-off wheels and a little spray paint.
My car used to be sluggish till 2500 rpm and then it would open up. Now the excelleration is far smoother and the sluggish lagg is almost non existent I would say 90% cured. I feel the gain is around 5Hp. Not bad 5hp for $5.00!!
The SOUND!!....from inside the cab its a little funny and somewhat tiny. The hollow cat resonates and without the insulation layer around the cat its pretty loud. But from outside the car sounds RADD!! and THROATY!! Its a raw performance sound, like a tuned RACER!
"NOT JAPISH AT ALL!!!"
I'm very pleased with the outcome of this mod!
Thanks again for the responce! I love this place!
__________________ Member: "Ran from a cop and got away" Club
Member: "Old Guys Rule" Club
nice if you ever get bored, try and get a sound link on here of that
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<span style='font-size:8pt;line-height:100%'><span style='color:blue'> <span style='color:red'>Chairman</span>of the "BMW-Forums...Cant hack it? Go Whack it... " Mafia..."We'll take your shoes" </span></span>
Did that way back when I had my LT1 T/A. The sound was raspy as hell, and daily driving turn into shit, do to a nice loss in bottom end. Fuel milage went straght to hell, especially once I got the medium stall converter installed. There was one up side. Well, two actually. Sound at WOT. It was off the hook. Sounded nice as hell, even flowing through a stock muffler. Second upside was the performance at WOT. Pulled really well past 4k rpm. Seat off the pants difference. Eventually I had to put the cat back on, since it was time to smog the car, so I installed Car Sound cat from magnaflow. It felt like I lost about 2 wheel hp up on top, but I got so much torque back, it did not matter anymore.
Lesson of the story is: replace cats with either high flow cats, or bullit resinators.
Bimmin88, we should go for a drive next Monday!!! Jamez is prolly coming up to work in my garage, and we can talk to Spiff and see if the 'rents will let him out of his cell for a bit!!! we'll bring a few cameras too!!!
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