Stillen Headers installed - Review/Pics/Vid/Dyno

semtex · 04-22-2009, 07:43 PM

I already stated how much driving I did after the header installation in a previous reply to RCZ (see pg 2), and the afr is shown on the first Dyno Dynamics sheet from this morning. I did not wrap the headers to cure whatever you said about catalyst warm up time. I wrapped the headers to increase their efficiency and reduce heat in the engine bay. I've used parts from both Stillen and JWT, and IMO they both make quality parts.

tbonesteak · 04-23-2009, 12:53 AM

Quote:

Originally Posted by Jesse

oH, yeah, how the heck did I miss that? It was hard to see the afr but it looks like its in the right area. Whats your opinion on the "piggy back" trimming? Too much of a hack job? Rather tune ecu itself im guessing? its understandable...the z is not some cheap honda I know. I know some people probably laughed or sneered when I mentioned that.

easy there. since when are hondas cheap? cheap in what way? stop generalizing; thats what ricers do. as enthusiasts, learn to respect other cars for the credit they deserve.

RCZ · 04-23-2009, 07:45 AM

Quote:

Originally Posted by tbonesteak

easy there. since when are hondas cheap? cheap in what way? stop generalizing; thats what ricers do. as enthusiasts, learn to respect other cars for the credit they deserve.

+1

semtex · 04-23-2009, 07:50 AM

Quote:

Originally Posted by SMJane_Again

Thanks for the external vids, Semtex! That second graph was about as linear as it gets for whp. Even though the headers aren't quite where you wanted them, what is your impression of your setup as it stands?

S.

I like it. I'd prefer the exhaust to be a little throatier sounding, but it's not bad as it is. It stays quiet until you step on it. I suspect that most people think this is actually a good thing, but I guess I'd just like a little louder all throughout the band. It was throatier sounding and louder in the low to mid range with the stock headers. I'm eager to get a dyno tune though. I suspect that as much gain as the car as made, there's still a good chunk of untapped potential. The UD pulley goes on next, then a tune.

Quote:

Originally Posted by Jesse

oH, yeah, how the heck did I miss that? It was hard to see the afr but it looks like its in the right area. Whats your opinion on the "piggy back" trimming? Too much of a hack job? Rather tune ecu itself im guessing? its understandable...the z is not some cheap honda I know. I know some people probably laughed or sneered when I mentioned that.

I'm not sure I'd call piggyback units a 'hack job'. I think it just depends on the quality of the unit. I do prefer ECU reflashes though. They just seem 'cleaner' to me, if that makes any sense. But ECU tuning is definitely not my area of expertise. In fact, looking at the AFR data, I noticed that the line slopes downward as rpm increases. Does that mean it's getting leaner as rpm climbs? Or richer?

LiquidZ · 04-23-2009, 07:55 AM

Quote:

Originally Posted by semtex

I'm not sure I'd call piggyback units a 'hack job'. I think it just depends on the quality of the unit. I do prefer ECU reflashes though. They just seem 'cleaner' to me, if that makes any sense. But ECU tuning is definitely not my area of expertise. In fact, looking at the AFR data, I noticed that the line slopes downward as rpm increases. Does that mean it's getting leaner as rpm climbs? Or richer?

Getting richer.

04-22-2009, 07:43 PM	#1 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 55 Posts: 5,995 Drives: People to drink Rep Power: 34	I already stated how much driving I did after the header installation in a previous reply to RCZ (see pg 2), and the afr is shown on the first Dyno Dynamics sheet from this morning. I did not wrap the headers to cure whatever you said about catalyst warm up time. I wrapped the headers to increase their efficiency and reduce heat in the engine bay. I've used parts from both Stillen and JWT, and IMO they both make quality parts. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

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