I can, but because the ART Pipe testing was done in 3rd gear and this was done in 4th, the comparison is inherently skewed a bit between the tests. If you would still want me to, though, I can. Or I could also PM it to you. Just let me know.

 

lol seriously guys. the art test pipes are a good product but if you really think they produce a significant amount of power above and beyond what a cheap set of megan test pipes can produce, you are in dream land. motordyne makes great products and their engineering is above and beyond what most companies put in but this isnt rocket science you are dealing with, they straight pipes for god's sake, lol!

 

I do find it ironic that you mention rocket science when that's exactly what sort of science is being applied with the Helmholtz resonance chambers' placement that close to the exhaust manifold. I know that there are people who are absolutely convinced that Motordyne's claims are rubbish, and that's their right. But what anyone thinks at this point is utterly meaningless. We know they have great sound improvements over test pipes and great performance improvements over HFCs. The performance difference as it relates to test pipes is ultimately unsettled at this point, so I think we should reserve judgment until more data points come in. That would be the responsible, scientific thing to do.

 

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Onago, a dyno run in 3rd and a dyno run in 5th (the 1:1 gear) along with the JWT change could put the differences your results very close. Think back and see if that holds water to what you remember.

 

I'm not sure I understand what you mean. Could you explain more?

 

What i was referring to is that a dyno done in 3rd gear can read a little bit lower than one done in 4th or 5th (this is based on my previous experience with DJ's). Couple that with a soild loss from the JWT pop charger, the difference in the numbers could be much less than you currently think.

For example, the following chart is in 4th and 5th, in both cases they are fairly cool runs.

 

Duplicate post

 

Please explain to me how nearly every dyno shows ~20WTQ in the low end. And a consistent 10WHP across the entire powerband. Test pipes? No.

 

Okay, I think I understand you. I would definitely go with the logic, except that both dynos showing the overall loss at Uprev in Ausin were conducted in 4th gear. It's sort of my fault for the confusion, seeing how the ART Pipe review testing was the one done in third gear, and that one was here in Tulsa, not at Uprev.

Both before/after part tests (headers, ART pipes) took place here in Tulsa. Headers - 4th gear, ART pipes - 3rd gear. I keep all the before/after tests for a single part confined to a single gear, because gains are gains if the mechanical and environmental conditions are the same. The only peak numbers I really care about are the ones from Uprev, where I had the car tuned twice. But those are also the ones that show the loss despite the gains shown in the aforementioned part tests.

 

I think he did mention something about rocket science in his orignal post (ART test pipe post).

 

Haha, he did indeed.

 

For those interested, the Classifieds ad for these is finally up HERE.
[$475 pickup/$500 shipped]

 

Ill have to agree here. I paid $75 for my test pipes and gained 12HP. Thats good enough for me.

 

I may have a friend interested. Dibs...

 

waiting for some tasty ART pipes to come off.

 

I'm pretty sure they wont fit your HR!

 

Doh, you're right. I checked into it after posting.

Every dyno I've seen with these on, have had a significant increase in TQ from ~2K to 4K. Rubbish or gimic I think not.

Some light reading for those interested.. Helmholtz

 

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You mean this?

https://my350z.com/forum/intake-exha...omparison.html

The guys 4th gear runs show a delta gain. His 5th gear runs show virtually no gain. Seems most are congratulating the OP on his gains in 4th, while ignoring the part where he gained nothing in 5th.