CSG Mike's 2017 BRZ + Ace A350 dynos.

[churchx]

gtengr: aftermarket overpipe doesn't net much by itself. It's catless header that nets most. What happen to net more gain for ace - not because it's construction has replaced overpipe, but because it has longer runners, that happen to be more optimal for better exhaust scavenging on our engines. Just that by design choice ace chose to put some of that extra pipe runner length using overpipe portion, unlike Nameless (also having long tube header design) that tucked that extra length in rising bend in front of engine. Each design has some pros & cons, eg. nameless's has better suspension/engine clearance at overpipe portion, but worse in front of engine, and also haven't got rid of torque dip. Nameless/PLM long tube headers IIRC had OFT tune for them. Both Nameless & Ace have nice area under curve showing good gains across the rpm range. Everybody can pick their own poison

[JermMX5]

Here's the post I was looking for finally: http://www.ft86club.com/forums/showp...postcount=1207

Mike any input on that? 16HP is only 2 or so more HP than the OFT + OFH which would put it at a horrible $/HP.

[CSG Mike]

Originally Posted by JermMX5

Here's the post I was looking for finally: http://www.ft86club.com/forums/showp...postcount=1207

Mike any input on that? 16HP is only 2 or so more HP than the OFT + OFH which would put it at a horrible $/HP.

I can't comment on cars that I haven't seen in person. Most of the time, there is something mechanically wrong with the car.

One bad example vs everyone else with an Ace header? Statistically insignificant.

It's akin to the occasional "my JRSC only made 30whp" or "my Edelbrock kit wont idle" thread that pops up.

[Kodename47]

Originally Posted by CSG Mike

It's akin to the occasional "my JRSC only made 30whp" or "my Edelbrock kit wont idle" thread that pops up.

Or just that some engines are naturally stronger (produce more power) than others.

[Ultramaroon]

Originally Posted by CSG Mike

Unless you have cams and/or a build engine...

Gotcha. Bottleneck's upstream of the header.

[CSG Mike]

Originally Posted by Ultramaroon

Gotcha. Bottleneck's upstream of the header.

Precisely. Also, not recommended for cars that aren't being raced, as the bottom end gets hit pretty hard.

[Ultramaroon]

Originally Posted by CSG Mike

Precisely. Also, not recommended for cars that aren't being raced, as the bottom end gets hit pretty hard.

Sure, but I don't care about that.

[Brzzee]

Originally Posted by brzaapi

EDIT - Any BRZ I own would have the ACE350 and the DTFF kit w/ tune. Flex and header run well, that would be my minimal setup and I could live happy with just those two mods.

This combination with perrin filter and air tube is what i have, totally agree. Way happy. Delicious flex tune from late 2016.

[BuffDriver]

Still wish CSG Mike would cough up some info on what ceramic coat is used. With no heat shield like on the OEM header in daily driving the engine compartment must be getting a lot hotter.

A) Wonder how much hotter engine compartment on a 98 degree summer day in stop n go traffic on the street with and without the coating? { Oil pan temp hotter due to radiated heat? }

B) And when I researched I kept running into comments but no facts on even stainless deteriorating from the metal getting too hot under the ceramic in header applications. Lots of speculation, conjecture and hearsay but no definitive proof the metal gets damaged like with wraps. If there is NO damage then why do so many header mfg void warranty if aftermarket coated.

So what is CSG using that's OK?

[CSG Mike]

Originally Posted by BuffDriver

Still wish CSG Mike would cough up some info on what ceramic coat is used. With no heat shield like on the OEM header in daily driving the engine compartment must be getting a lot hotter.

A) Wonder how much hotter engine compartment on a 98 degree summer day in stop n go traffic on the street with and without the coating? { Oil pan temp hotter due to radiated heat? }

B) And when I researched I kept running into comments but no facts on even stainless deteriorating from the metal getting too hot under the ceramic in header applications. Lots of speculation, conjecture and hearsay but no definitive proof the metal gets damaged like with wraps. If there is NO damage then why do so many header mfg void warranty if aftermarket coated.

So what is CSG using that's OK?

Because the manufacturer cannot control what ceramic is used. Not all ceramic is equal.

The conditions of stop-and-go traffic is nowhere near as rigorous as sustained WOT on track.

My car's seen 40+ minute extended sessions on track without issue. Radiant heat absorbed by the oil pan, relatively speaking, is irrelevant compared to the heat generated by sustaining extended 5500+ RPM.

Tomei includes wrap for the oil pan because of proximity.

As for the air under the engine bay, I would assume in 98F+ degree weather, you'd have AC on, which will force airflow through your engine bay.

[swarb]

Originally Posted by BuffDriver

If there is NO damage then why do so many header mfg void warranty if aftermarket coated.

Because ceramic coating is applied in different ways, some of which use higher temps that what the metal would see under normal conditions.
Also, the coating will make it difficult for inspection(under a microscope) to see why the metal fatigued and failed.

[Jakinit]

Seeing this makes me sort of regret going for the Tomei UEL with overpipe. I have to get mine on the dyno and see what it's putting down.

Mike, unrelated but do you think a drop in filter would give any kind of bump to a '17?

[justinco]

Originally Posted by Jakinit

...
Mike, unrelated but do you think a drop in filter would give any kind of bump to a '17?

My name's not Mike, but, you're not going to feel anything with just a filter alone.

[weederr33]

Originally Posted by justinco

My name's not Mike, but, you're not going to feel anything with just a filter alone.

Thanks Mike!