223whp & 207tq
 

Did a baseline dyno yesterday. 223/207 were the dyno jet numbers. Car is desnorked with a bb muffler. Will be adding headers and bypass pipes. Wanted to see where it was first.

Post the chart if you can!

Pretty Strong for an 11 year old car there Brad. :cheers:

What year and model car do you have? I have been looking at the BB muffler also.

02box S. it was coresellers car that I bought a little over a year ago. it came with the bb exhaust and desnork. i have an evoms CAI and top speed headers/bypass pipes to install and wanted a baseline. Plans are to rework the CAI and seal it as we'll as add an udp and ipd plenum. Will dyno after each to see results. Going with the top speed setup bc it was just darn cheap, <350.00 for headers and bypass pipes. Quality looks decent so I figured I would take a chance.

15% drivetrain loss indicates 256fwhp. I was pleased. She has always felt strong. Hoping to see 230+ after exhaust. I am hoping it will be bearably loud.

I'm sitting here chuckling, I didn't even know it was desnorkled........seriously. I did know it was a quick little feller though. Enjoy the modding Brad :cheers:

Not planning a ton of mods. I have a set of volk forged wheels going on this month. I will add coilovers and big sways later. That is it for mods until she needs a new motor. Then it's off to rabys.

I consider 225/210 stock for a strong 3.2 our my dyno jet.

Well I guess I did indeed pick the right boxster to buy. So far so good. We will see what happens adding the exhaust.

Brad, you should "resnork" it and dyno it before you do any else. It would be nice to see the difference...

Don't have the snork. Car came without it. Sorry.

If I send you my "snork" would you use it to do a comparo? Would be nice!

Please do!

can't find this thread, but someone already did it.
the dyno shows +5HP with the car desnork .
however, some say it is not accurate since the dyno is done when the car is stationary. the assumption is that the car gets "air rammed" when on the move.
so basically some claim the desnork is not adding any power despite the dyno results.
i think it doesn't really matter. it sound good, and you are definitely not loosing power.

Actually, some of the learned folks on this forum (Mr.Raby I believe is one) claim that overall there is a loss over most of the rev range with a desnork. There may be a certain rpm that shows a gain, but overall I've heard it will slow the car down...even though it may sound faster.

New exhaust is already on the car so no joy. Sorry. Best I can do is offer a comparison bw a mostly stock exhaust and headers/bypass pipes added.

Later I will add the CAI, udp, and ipd plenum. I will dyno after each. Hopefully it will give decent data.

5hp more or no change or loss of power, that's why some incl. me suggested to do another before/after desnork.... Oh well!

Well good news and bad. Good news first. Headers, bypass pipes and BB muffler is only loud when you romp on it and all resonance/drone is gone. Mark, the previous owner had considered reinstalling the factory muffler bc of the drone. It's all gone. Car actually sounds quieter inside! Wife says its pretty loud when I passed her but that was accelerating past 5k rpms. I am more than happy with the sound.

Bad news...had to install both sets of the max speed mini cats. The front 02 sensor wiring wasn't long enough to reach. So now the 02 sensors are both reading the same and I have a cel. I guess I need to extend the wires or else get a 90 adapter. My only fear with an adapter is that the 02 sensor will be too far out if the 02 stream to read correctly. Right now I imagine its running in strictly open loop mode.

Advice?

See if the rear O2 sensors are long enough to work in the front, they should. If so you may want to get new rears & install in the front. You may get a CEL for slow heating of the O2's so keep in mind to minimize that.