[Ferris]

Since the pass side is still partially on I'm going to see if the collector can be fit, if it does I'll modify the driver side off the car till it fits smooth and try again. I have order new o2 sensor bungs for my stock cats anyway since the threads pulled when removing one of the sensors.

 

[mhiscott]

I found the infinity headers pretty darn tough to install, and definitely cursed them along the way lol. In the end they bolted up (albeit after one side had a part replaced) and they've been fine ever since.

Try leaving the primaries loose until you can get the five pipes started in the collector. You're probably already doing this but - just a tip lol.

I just put aftermarket downpipes and a midpipe on my M3 over the weekend, and - I have to say, the older I get the more I dislike aftermarket parts. I have near on all OEM parts on the E60 - except some like the long tube infinity headers. The parts for my M3 I had to modify too. BOTH the downpipes, and the midpipe.

 

[AAA]

A little heat shield trimming to accommodate the new O2 sensors.

 

[Ferris]

Thanks for talking me down from the ledge, Pass side is done.

 

[mhiscott]

Good stuff.

 

[AAA]

The good stuff! I copied my adaptations to see how they change with the new headers.

 

[SeattleAggie]

The good stuff! I copied my adaptations to see how they change with the new headers.

What is the rest of your exhaust setup?

 

[AAA]

Secondary cats, resonator and eiseman mufflers. I can't imagine what it would be like wide open.

I can say that before it had a deeper muffled tone, now it's a little more raspy. I like it!

 

[specialized2010]

Secondary cats, resonator and eiseman mufflers. I can't imagine what it would be like wide open.

I can say that before it had a deeper muffled tone, now it's a little more raspy. I like it!

Like this?

 

[Ferris]

Thanks @AAA and @mhiscott , I went back tried it again figure out the best approach even if it included a 4lb sledge hammer and got all back together and it idles with no major leaks.

 

[BlownN54Twins]

Putting mine in now. Definitely a huge benefit to just dropping the subframe. Probably wasted 2-3 hours yesterday fighting to get bank 2 headers in, just to drop the subframe and have it done within an hour.

 

[specialized2010]

Putting mine in now. Definitely a huge benefit to just dropping the subframe. Probably wasted 2-3 hours yesterday fighting to get bank 2 headers in, just to drop the subframe and have it done within an hour. View attachment 997896

Man.. what states do you guys live in?? Im jealous.. Smh

 

[AAA]

Like this?

I need more cowbell!

 

[AAA]

One wideband AFR will drive you crazy, two will make you want to drive into a wall!

I might just put the gauge in the glove box.

 

[AAA]

8 pages of adaptations, Before & after first 4,

 

[AAA]

The last 4,

 

[AAA]

klopfadaptionsrueckziehwinkel= knock adaptation retraction angle.

All numbers all went down, whatever that means! lots of information on theses pages.

It will be interesting to see how the car changes over time. The wideband AFR is on the lean side, 14.8-15.

 

[AAA]

A local guy I have done business with just took his M5 with newly installed Partee headers to the Dyno. He said that passenger side header was awesome to install too!

 

[flacoramos]

A local guy I have done business with just took his M5 with newly installed Partee headers to the Dyno. He said that passenger side header was awesome to install too!
View attachment 998001

Gonna need details on what each run means. Omg...

 

[AAA]

He may jump on. It was a dyno day with a group. I was logging my vanos/cam position while driving and it is defiantly variable. I'm thinking that's the dip at 4krpm.