Header tuning
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Join Date: Jun 2012
Location: Mississauga Ontario Canada
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Header tuning
Hey guys, thanks again for the advice on installing headers, it went pretty smoothly!
Now I'm onto tuning for the extra flow and one thing that jumped out at me was I can now target around 35-36 degrees in the 5000+ rpm range without knock retard, where before the headers I could really only get 32 on a good day.
That made a huge difference in power! Is that normal for headers to help timing advance or was my cat just plugged right up?
In part throttle cruising the headers only leaned the tune up about 5BLMs give or take 2, which I though was a little lower than expected but I richened it up and it's back to perfect now.
I am going to be ordering a wideband o2 sensor soon and I was wondering if I should lean it out more with headers @ WOT or richin it? Currently it's targeting 12.7:1 I left some room for error because I don't have a wideband yet.
I won't be on a dyno for another month probably but when I do get the wide band next week should I lean it up to 13.7ish or is that to lean?
Thanks!
Now I'm onto tuning for the extra flow and one thing that jumped out at me was I can now target around 35-36 degrees in the 5000+ rpm range without knock retard, where before the headers I could really only get 32 on a good day.
That made a huge difference in power! Is that normal for headers to help timing advance or was my cat just plugged right up?
In part throttle cruising the headers only leaned the tune up about 5BLMs give or take 2, which I though was a little lower than expected but I richened it up and it's back to perfect now.
I am going to be ordering a wideband o2 sensor soon and I was wondering if I should lean it out more with headers @ WOT or richin it? Currently it's targeting 12.7:1 I left some room for error because I don't have a wideband yet.
I won't be on a dyno for another month probably but when I do get the wide band next week should I lean it up to 13.7ish or is that to lean?
Thanks!