|
|
SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
Post Reply |
|
Thread Tools | Search this Thread |
08-31-2023, 07:14 PM | #1 |
Enlisted Member
8
Rep 40
Posts |
Another Header Thread
I have a 2005 Z4 with FI from Vortech. Exhaust is stock and so I am looking to replace the headers to improve flow and HP. I think I have settled on buying these from racing dynamics. Because this is a street car, I will need to pair these headers with some high flow cats. Anyone have recommendations they have had success with? https://www.racdyn-usa.com/PROD/130+08+54+365.html
|
08-31-2023, 07:34 PM | #2 | |
Lieutenant
570
Rep 562
Posts |
Quote:
Last edited by Piper1; 08-31-2023 at 07:40 PM.. |
|
Appreciate
0
|
08-31-2023, 07:53 PM | #3 |
Enlisted Member
8
Rep 40
Posts |
Thanks. So did you replace the cats or just delete them? I am thinking I will need to pair the headers with some high flow cats but want to ensure I have something that will definitely fit.
|
Appreciate
0
|
08-31-2023, 08:00 PM | #4 |
Lieutenant
570
Rep 562
Posts |
In the pic the first section that attaches to the headers is the cat section from supersprint, they make both straight pipe section or with their cats. Unless you code out the post O2s you’d have to go with something of this route if going with catless headers if there’s emissions where you’re at that might be an issue coding them out or dealing with a cel. No codes thrown with plugging in the O2s in the supersprint catted section.
|
Appreciate
0
|
08-31-2023, 08:20 PM | #5 | |
Enlisted Member
8
Rep 40
Posts |
Quote:
|
|
Appreciate
0
|
09-01-2023, 08:12 AM | #6 |
Enlisted Member
8
Rep 40
Posts |
Found these: https://privatelabelmfg.com/collecti...tic-converters
Might give them a shot with the racing dynamics headers and a magnaflow muffler. |
Appreciate
0
|
09-01-2023, 10:50 AM | #7 |
Colonel
2429
Rep 2,704
Posts
Drives: Built not Bought 04 Z4 VF
Join Date: Feb 2013
Location: Kitchener Ontario Canada
|
You will want to consider metallic cats over ceramic, being FI.
Don't know what the internals are on the cats you posted.
__________________
W2A Intercooled Vortech V3Si, custom ducting, Alpha N, 60# Bosch,2.62 pulley, multi port WMI, Severn Tuning(pokeybritches), Tial, magnaflow,SS race muffler, 42 design,3.91LSD, H&R, Hotchkis,ST coils,Konis, Megan camber arms, AKG SS, Nylon mounts, Poly bushings, Carbon interior, CF Aero.APEX
|
Appreciate
0
|
09-01-2023, 11:03 AM | #8 |
Enlisted Member
8
Rep 40
Posts |
Thanks Steeler. Any other recommendations you might have for high flow CATS that won't break the bank? Still putting kids through college
Also, off topic, but what did you use for your intercooler? |
Appreciate
0
|
09-01-2023, 11:49 AM | #9 |
Colonel
2429
Rep 2,704
Posts
Drives: Built not Bought 04 Z4 VF
Join Date: Feb 2013
Location: Kitchener Ontario Canada
|
Take a look around this site.
https://www.siliconeintakes.com/fron...t-intercooler/ I ended up with magnaflow section 2 meant for an N52 I believe (bit of fab work required to rotate flanges at the header collectors) and magnaflow metallic cats in the end and 3" supersprint system back from there. I learned the hard way about ceramic cats with FI
__________________
W2A Intercooled Vortech V3Si, custom ducting, Alpha N, 60# Bosch,2.62 pulley, multi port WMI, Severn Tuning(pokeybritches), Tial, magnaflow,SS race muffler, 42 design,3.91LSD, H&R, Hotchkis,ST coils,Konis, Megan camber arms, AKG SS, Nylon mounts, Poly bushings, Carbon interior, CF Aero.APEX
|
Appreciate
1
DiscoJax7.50 |
09-02-2023, 10:22 AM | #11 |
Enlisted Member
8
Rep 40
Posts |
I'm researching these but will probably hold off for a bit. Between the new tune, probably a bad throwout bearing and now headers, I think I have spent enough.
I did place the order for the Racing Dynamics headers. Those guys were great to work with. They emailed me back and forth immediately, answering all my questions and then shipped them right out. Should be here tomorrow and I am going to see if I can get installed on Tuesday and then finish the tune. For now I will go catless. I may add CATs in the location of the small muffler later on when I get the muffler done but, one thing at a time. |
Appreciate
1
Piper1569.50 |
09-02-2023, 11:28 AM | #12 | |
Lieutenant
570
Rep 562
Posts |
Quote:
|
|
Appreciate
1
DiscoJax7.50 |
09-02-2023, 03:00 PM | #13 |
Colonel
2429
Rep 2,704
Posts
Drives: Built not Bought 04 Z4 VF
Join Date: Feb 2013
Location: Kitchener Ontario Canada
|
WA intercooler packaging is tight for our platform. But is doable.
__________________
W2A Intercooled Vortech V3Si, custom ducting, Alpha N, 60# Bosch,2.62 pulley, multi port WMI, Severn Tuning(pokeybritches), Tial, magnaflow,SS race muffler, 42 design,3.91LSD, H&R, Hotchkis,ST coils,Konis, Megan camber arms, AKG SS, Nylon mounts, Poly bushings, Carbon interior, CF Aero.APEX
|
Appreciate
1
DiscoJax7.50 |
09-03-2023, 04:57 PM | #14 |
Enlisted Member
8
Rep 40
Posts |
Very nice! Just got these today. Quick shipment from Virginia!
|
Appreciate
0
|
09-30-2023, 04:49 PM | #15 |
Enlisted Member
8
Rep 40
Posts |
Got the headers in and new tune with the RS4 MAF. With the Vorterch supercharger, I've realized some nice power gains and it sounds great when I open up! Still working through a rich warm idle with the tuner.
Still have the stock exhaust. I will likely not swap that out until sometime next year. No real need though because it really sounds nice as is. The Racing Dynamics headers are really nice and well designed. I typically do my own work but I splurged and had an Indie shop install them. They were were pretty impressed with the support and the relative ease of install. One problem I did have was that one of the headers tended to be 1/4 in shorter than expected. Racing Dynamics sent me a full new set to make up for the problem but we fixed it just by adding a spacer. So I have an additional NIB set. PM me if you are interested. I'll upload some a video soon with the sound. |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|