Replace your cat, here were my results before and after:mpg9999 said:Like I said I did visually check it, but im still not sure about it. I barely passed emissions (by one point, hehe), and I can smell a sulfur smell if I get on it really hard. Thats why I plan on doing a dyno run with no cat. Get those ideas coming!!!!
I think your are too big on the exhaust. go 2.25. Stock muffler is not what is holding you back per say. Friend went with a 2.25" Universal muffler. Has Hotshot, Cat and 2.25 all the way back. Breates easier, but still has backpressure. Also, what do you mean you "reground" the MAF?mpg9999 said:I have posted this on another board before, but I figured id post it here to see if you guys have any ideas.
My car is not making the power it should. A stock SE-R should put around 120 hp to the ground. The first dyno run I did I had an AEM CAI, and put down about 111 hp. The dyno run is here: http://community.webshots.com/photo...80439XOjVaMGpcI . Notice the line is very shaky. The next time I went I had the AEM CAI, a Hotshot header, and courtesy midpipe (2.5 inch mandrel bent exhaust). I dynoed at around 122-123 hp with that, still very low. In an attempt to fix this problem, I have replaced my dist cap, rotor, plugs (gapped correctly), wires, fuel filter, cleaned air filter, new O2 sensor. I have also reground my MAF, adjusted my TPS voltage. My compression checks out great. My cat is not clogged. My timing is at 15 degrees. Now, here is what I think it could be. The first thing im going to do is have my fuel injectors cleaned and flow tested. I havnt really heard of anyone's injectors getting clogged, but I completely cloged up a fuel filter after less then 5k miles, so thats first on my list. Next up will be some dyno tuning. I am still runing the stock muffler, so I will do a run with no muffler. After that ill do a run with no cat just to make sure thats ok. Then I might play around with my timing some, and also run with the AF ratio probe to see if that tells me anything. If my AF is off, i may replace the FPR (fuel pump has been replaced). Im also going to pull the valve cover and check to make sure my cams are not worn. Anyone have any insights or ideas? TIA
Check your MAF itself. I fried mine a few months ago and the car dyno'd at 130 when it should've dyno'd ~150 (it had previously dyno'd at 148 and I was trying to hit 150 with some small tweaks that day) Turned out that the MAF had gone bad.mpg9999 said:My car is not making the power it should. A stock SE-R should put around 120 hp to the ground. The first dyno run I did I had an AEM CAI, and put down about 111 hp.
Honestly I was so extremely pissed off (because the car had just been giving me problems after problems after problems) that I just got the car off the dyno, packed up my stuff, didn't even say goodbye to any friends and drove 4 hours home. I was PISSED! I can try to see if the shop has it recorded (I doubt they'd hold onto a dyno chart of a 200 with full bolt-ons putting down 130 to the wheels!) but is there anything in particular you're looking for?AztecIam said: