In my opinion, headers have an inverted bell curve in terms of efficiency or gains. In other words, they lose efficiency once at stage 2 compared to stock or stage 1, but will probably come back around to healthy gains when the new blower is released (as more air is being shoved down its neck).
Saki, I agree and that is a good analogy however, the fact that AWE looked into it and decided against it says something… Also, whatever happened to the set APR had? Don’t recall seeing results of their testing… lol
Doug, Could be the case especially with the additional flow… right now(stage II) the car is definetly restricted on the intake side not exhaust…
very possible. Was just saying. The whole world knows headers work wonders on an NA V8 like the B6/7 S4 with it’s shitty restrictive stock manifolds. Doesn’t mean anyone else will get off their arse to make them though.
Further, even if someone does make a set, it doesn’t mean they know what you’re doing and that they made them well enough to help the car. Many of the headers we’ve seen for the various Audi platforms were designed without respecting any of the performance fundamentals of managing exhaust gases.
This.
Did we ever get to hear the stage III TB size yet? I’m a little out of touch
This.
Did we ever get to hear the stage III TB size yet? I’m a little out of touch
Here is a link to the baseline dyno we did with headers (both stock and APR V1).
http://ecodetuning.com/gallery/index.php?view=thumb&dir=./B8S4/DynoRuns every possible combination was covered at the time, with comparisons done in many different ways.
Pete has Doug’s set and should be getting them installed.
I think Primetime’s drastrip comparison trumps any dyno that the company selling the snake oil possesses.
Here is a link to the baseline dyno we did with headers (both stock and APR V1).
http://ecodetuning.com/gallery/index.php?view=thumb&dir=./B8S4/DynoRuns every possible combination was covered at the time, with comparisons done in many different ways.
Pete has Doug’s set and should be getting them installed.
Greg, Here is a thread that you may want to check out… I ran a guy same day, same track, same time in many cases with very similar mods(headers for him vs HFC’s for me), with him being 250+ lighter through removing most of his interior and not having sport diff… Traps and ET’s were very very close… I’ll do it again next weekend with a even more modified car that has your companies headers… Will see how that goes? Honestly, glad your on the forum but posting dynos from your in house testing that helps support sales is NOT a good measuring stick… All the drsgstrip results that we have seen over the last 2+ years don’t support the gains that are claimed, sorry! Dynos don’t mean much, my car only dynoed 361AWHP but managed to run a 11.69 and trap 119+ a few times…
I think Primetime’s drastrip comparison trumps any dyno that the company selling the snake oil possesses.
Primetime has no direct comparisons, it was his car and another car. This is a relative comparison and not a direct comparison. Yes primetimes car was faster that day, but it is still relative. You need to use the same car swapping only that part for a true comparison.
Dyno plots are very relative if exact conditions are used, they simply show a delta. If the delta is positive and can be corroborated, then by simple extrapolation, a gain is clearly shown.
Sure there is no massive gain or evidence to suggest a super faster car, but no claim is made to that. We def need a bigger sample size and there simply is not enough vehicles with these headers going to the track and providing real world data.
Greg, Here is a thread that you may want to check out… I ran a guy same day, same track, same time in many cases with very similar mods(headers for him vs HFC’s for me), with him being 250+ lighter through removing most of his interior and not having sport diff… Traps and ET’s were very very close… I’ll do it again next weekend with a even more modified car that has your companies headers… Will see how that goes? Honestly, glad your on the forum but posting dynos from your in house testing that helps support sales is NOT a good measuring stick… All the drsgstrip results that we have seen over the last 2+ years don’t support the gains that are claimed, sorry! Dynos don’t mean much, my car only dynoed 361AWHP but managed to run a 11.69 and trap 119+ a few times…
Haha this in itself is even more confusing, you have a freak car!! 
In all honesty lets say the headers provide a realistic improvement of 20hp and 15ft/lb to the wheels. Prime, how much do you think that would honestly equate to at the strip? I wouldn’t think much?
Why don’t you just buy them and see if you can run an 11.4!
Primetime has no direct comparisons, it was his car and another car. This is a relative comparison and not a direct comparison. Yes primetimes car was faster that day, but it is still relative. You need to use the same car swapping only that part for a true comparison.
Dyno plots are very relative if exact conditions are used, they simply show a delta. If the delta is positive and can be corroborated, then by simple extrapolation, a gain is clearly shown.
Sure there is no massive gain or evidence to suggest a super faster car, but no claim is made to that. We def need a bigger sample size and there simply is not enough vehicles with these headers going to the track and providing real world data.
[quote=“Jones2012s4,post:213,topic:4046”]
Jeff, I don’t think I have a freak car I just think different dynos generate very different #'s and thus my preference for strip times/pbox numbers… Not sure how much ET I would shave with that bump? Probably a tenth or two… As far as me vs Imola, I understand there are differences in cars but given he was much lighter and had lighter wheels tells me he should go faster… I’ll be honest though part of it was his driving and understanding of his car and the strip… We had the same tune, same pulley, same gas… The only additional mods I had were the CPS and BBK upfront… It was a 450DA day so I doubt the CPS helped too much and the brakes are negated by his lighter wheels… If there was legitamate proof that the headers added power over what I have now I’d already have them, trust me… Will see what happens when I go stage III…
Haha this in itself is even more confusing, you have a freak car!!
In all honesty lets say the headers provide a realistic improvement of 20hp and 15ft/lb to the wheels. Prime, how much do you think that would honestly equate to at the strip? I wouldn’t think much?
Why don’t you just buy them and see if you can run an 11.4!
Oh I agree, dyno’s are simply for delta purposes, it was more of a plug at people who love dyno battles. I understand he should have been faster on paper, but this whole argument in itself is a testament to why real world data always trumps!
I almost want to give you my headers for testing purposes! I already had them when I got tuned 
We should be pretty well matched, any benefits of the headers will either be seen or not. I honestly don’t see any surprises coming. It is going to be fun and hopefully we can get some good info for everyone.
My main point is, they definitely “shouldn’t” make your car slower
[quote=“Jones2012s4”]
Jeff, I don’t think I have a freak car I just think different dynos generate very different #'s and thus my preference for strip times/pbox numbers… Not sure how much ET I would shave with that bump? Probably a tenth or two… As far as me vs Imola, I understand there are differences in cars but given he was much lighter and had lighter wheels tells me he should go faster… I’ll be honest though part of it was his driving and understanding of his car and the strip… We had the same tune, same pulley, same gas… The only additional mods I had were the CPS and BBK upfront… It was a 450DA day so I doubt the CPS helped too much and the brakes are negated by his lighter wheels… If there was legitamate proof that the headers added power over what I have now I’d already have them, trust me… Will see what happens when I go stage III…
Oh I agree, dyno’s are simply for delta purposes, it was more of a plug at people who love dyno battles. I understand he should have been faster on paper, but this whole argument in itself is a testament to why real world data always trumps!
I almost want to give you my headers for testing purposes! I already had them when I got tuned
We should be pretty well matched, any benefits of the headers will either be seen or not. I honestly don’t see any surprises coming. It is going to be fun and hopefully we can get some good info for everyone.
My main point is, they definitely “shouldn’t” make your car slower
The main point was that it was an in house dyno by the company selling the product.
Sorry I didn’t define the type of comparison, but plain and simple…Primetime’s runs with a header car same day same track speak loudly. I have no dog in this fight, but this is audirevolution…the furthest from dynorevolution and vendorzine that you can get.
Why hasn’t Paper’s Eurocode dyno queen made it to the strip? Just curios.