ACE Header Independent Testing Results and Review - 199.6WHP on CA 91 Octane

[churchx]

Nice to see that my hunch was right on the spot that real aceheader results should have been way better then preliminary dyno charts. I simply saw no possible reasons for it to not be among other top headers seeing it's design and not seeing possible limitations in it. Even more interesting to me seems it's good performance on petrol, as i don't have E85 here. No torque dip was known before, but nice to see these gains that accompany it. Also seeing that many other top headers reported gains of +35-40whp with other intake & exhaust bits fitted (sometimes even with direct exhaust pipe), but here Everything (including oem airfilter) except header and tune is stock, one can probably add extra 10hp with ease to these results. Maybe even more. Nice bit of hardware for those wishing maximum while staying NA.

[Hyper4mance2k]

Originally Posted by steve99

Counterspace Baseline is stock BRZ on stock tune on 91 fuel (different car to tuned one with header). To get rated output from a stock BRZ/86 you need 93 fuel. The stock tune pulls a lot of timing on 91 fuel, probably worth 7 or so hp loss especially if it crap 91.

I would imagine the ACE header baseline was done on 98 ron fuel in their country which is probably closer to 93 aki usa fuel.

From everything I have read, our 93AKI is amazeballs good. It's better than your 100. Your 98 is better than our 91, but not by much.

91AKI>98ron>100ron>93AKI

For comparison's sake, 91AKi is currently $4.25USD per gallon. 93 is $7.95 & 100 AKI is $8.95

[steve99]

Originally Posted by Hyper4mance2k

From everything I have read, our 93AKI is amazeballs good. It's better than your 100. Your 98 is better than our 91, but not by much.

91AKI>98ron>100ron>93AKI

For comparison's sake, 91AKi is currently $4.25USD per gallon. 93 is $7.95 & 100 AKI is $8.95

Our Aussie 98 ron is rubbish actually worse than your 91aki, European/Asian 98 seems much better

Aussie98/100RON>91AKI>European/Asian98RON>93AKI

Even on our 100ron (no longer available) we had to pull timing out of maps that would run ok on 91AKI.

Fuel is a big issue here we get great gains with E85 as our petrol is so crap.

[churchx]

I wonder where is european 95RON placed then (supposedly also listed in manual for my gt86, as allowed fuel). Below or on par with Australian 98 ..
As for E70 or E85 @OP .. i doubt there are much gains to be had above E70 .. there is limit how high detonation number can net noticeable improvements and when even higher detonation number will start showing diminishing returns. At least that is my impression on it from (IIRC) Shiv's thread about need for flex fuel kit ..

[s30series]

The ptuning headers dyno has me curious......that torque dip is horrible

[churchx]

PTuning's was designed with racing in mind as main niche/priority. Unlike daily driving, it's more common that engine is kept in high rpm powerband during racing most of the time, so not much of a problem if used in it's intended niche. You simply don't spin engine that slow for it to hit torque dip. As for all the rest Aceheader seems much better allrounder. Except for legality bit due no cat in few states/countries. But then again with cat in Aceheader's header it will loose it's main distinguishing feature - it's long runners not just from overpipe portion but also from header itself runners part length, probably loosing in process these high gains (and who knows, maybe even torque dip won't be fixed as good as it is now, if you halve runners length).

[steve99]

Originally Posted by churchx

I wonder where is european 95RON placed then (supposedly also listed in manual for my gt86, as allowed fuel). Below or on par with Australian 98 ..
As for E70 or E85 @OP .. i doubt there are much gains to be had above E70 .. there is limit how high detonation number can net noticeable improvements and when even higher detonation number will start showing diminishing returns. At least that is my impression on it from (IIRC) Shiv's thread about need for flex fuel kit ..

here is a log of South African 95 ron in stock tune IAM=0.2 and still pulling -3 degrees in places. Thats going to have a significant impact on performance.

Yes I doubt their would be any advantage on an NA car going from E70 to E85

http://datazap.me/u/steve99/south-af...ata=2-20-27-28

[Slowmotion]

Originally Posted by CSG Mike

To be fair, ACE was testing a lot more combos, and if they had custom tuned for each combo, testing would have extended nearly two weeks, rather than just one day. This header had some pretty shitty results with stock and OTS tunes. The flow is so different that you don't see the true strengths until a custom tune is used.

Based on other dynos, and the other independent result, I expect to see solid AUC and some minor peak gains with more breathing mods.

Because there is no live tuning available for the FA20, tuning is very tedious and slow. In contrast, with my S2k, I can live tune, and literally tune 5x-8x faster. Even CSG's testing was nearly two full days.

Good point. I thought they had done some sort of tuning for each setup, but I guess I read wrong.

[akyp]

Originally Posted by steve99

Our Aussie 98 ron is rubbish actually worse than your 91aki, European/Asian 98 seems much better

Aussie98/100RON>91AKI>European/Asian98RON>93AKI

Even on our 100ron (no longer available) we had to pull timing out of maps that would run ok on 91AKI.

Fuel is a big issue here we get great gains with E85 as our petrol is so crap.

I don't know the situation in Taiwan (that's where ACE is from correct?) but here our 98 RON is rather crappy too. With OFT OTS 91 tunes I need to pull quite a bit of timing to keep IAM at 1.0.

[Kostamojen]

This is pretty much what I expected. The ACE 4-2-1 is the best header you can buy for our cars.

[Alltezza]

Here I was sold on the JDL UELs and then I read this thread.......I can't wait to see more test results though I'm excited!

[Kodename47]

Originally Posted by churchx

I wonder where is european 95RON placed then (supposedly also listed in manual for my gt86, as allowed fuel). .

On my trip to Europe all pumps has the MON rating, which IMO is more relevant for our cars. AKI is (RON+MON)/2. I found that the good quality 98 fuels were mainly 86/87 MON giving ~92AKI. Here in the UK Shell VPower is 99 RON and 86 MON, the rest are 97 RON when I can't find published data but I expect 90/91 AKI.

[Andrew025]

Originally Posted by projek_01

Subbed for JRSC results. I may have to bite the bullet if it looks good.

Definitely interested in this as well.

[rlpaul]

I was thinking of calling you guys to see what you thought of this header... whelp, guess my questions are answered.