Not another header thread...

[Lantana frs]

Originally Posted by D_Thissen

Really? So if I increased the displacement from 2.0 to 2.3l, it would result in more power ?

Not necessarily but when the stroker crank fails they'll give you another one. Lol

[D_Thissen]

Originally Posted by Lantana frs

Not necessarily but when the stroker crank fails they'll give you another one. Lol

Lol that last post might have been me trolling.

[nikitopo]

Originally Posted by Lantana frs

I don't trust any of those jdm hentai houses. Why did cosworth choose to market a header?

I didn't want to mention names, but since you said about Cosworth they are saying that peak gains of the header is 5hp on the crankshaft (stage 1.2 -> 1.3). How much do you think they get on the wheels? 3-4whp? I agree that on the middle rev range there are more gains, but from my point of view the main reason to market a header was to prepare going forward with the S/C.

[steve99]

Originally Posted by nikitopo

I didn't want to mention names, but since you said about Cosworth they are saying that peak gains of the header is 5hp on the crankshaft (stage 1.3 -> 1.4). How much do you think they get on the wheels? 3-4whp? I agree that on the middle rev range there are more gains, but from my point of view the main reason to market a header was to prepare going forward with the S/C.

Not sure where your getting that info ? But they are claiming way more than that


http://www.cosworth.com/products/pow...package-range/


However their stuff is way overpriced, and i actually flashed a cosworth tune for a guy last week and i wasnt very impressed with the level of knock logged on our fuels in the real world

[nikitopo]

Originally Posted by steve99

Not sure where your getting that info ? But they are claiming way more than that


http://www.cosworth.com/products/pow...package-range/

Stage 1.2 gives 225hp and stage 1.3 gives 230hp. The only difference between these two stages is the header. So, the header adds +5hp.

Originally Posted by steve99

i actually flashed a cosworth tune for a guy last week and i wasnt very impressed with the level of knock logged on our fuels in the real world

They require very high quality fuel (98+ RON) for getting most of the gains. Check below fuel map 2 (+15hp):



You said many times that the fuel quality in Australia sucks, so I guess no much gains for your customer ...

[churchx]

nikitopo: there is one BUT. Performance gains from bolt-on mods are not cumulative and one soon hits diminishing gains NA. I'm sure that header installed alone, without rest of bits, would still net most gains from single component. So those +5hp are arguable.

[steve99]

Originally Posted by nikitopo

Stage 1.2 gives 225hp and stage 1.3 gives 230hp. The only difference between these two stages is the header. So, the header adds +5hp.


They require very high quality fuel (98+ RON) for getting most of the gains. Check below fuel map 2 (+15hp):



You said many times that the fuel quality in Australia sucks, so I guess no much gains for your customer ...

Haha not my customer was just helping the guy out, we were running the 95 map on 98 fuel and still -2 knock iam 0.8 and i could actually hear it knocking in the 3000 area if gou accelerated for the price they sgould offer revisions. It locked tune so no access.

The header produces its best gains in midrange where you drive most of the time, id be more concerbed with that than peak gains for 90% of people.

True peak gains are limited but header was last mod, in header and tune first up would have produced better gains.

Coosworth do give you all the NA tunes when you buy the initial pack at least thats one consession. But from what i saw they need to offer revisions for different countries fuels

The tune adds timing and leans fueling

[Lantana frs]

I think unfortunately, that the header purchase usually comes after money is wasted on other mods. Its funny how much deliberation is spent on headers while useless catbacks and intakes fly off the shelves.

[Andrew025]

Originally Posted by Lantana frs

I think unfortunately, that the header purchase usually comes after money is wasted on other mods. Its funny how much deliberation is spent on headers while useless catbacks and intakes fly off the shelves.

Probably because most people know catbacks are just noise makers and don't need a lot research into which is the "best".

[nikitopo]

Originally Posted by steve99

But from what i saw they need to offer revisions for different countries fuels

The tune adds timing and leans fueling

Send a message to Matt@Cosworth. He might be able to tweak a bit the tune for your friend.