Proven Power Dyno Database Thread
 

Hey folks,

Looks like several 370Z owners in Tampa have been going to Proven Power to use their dynojet. I will be doing the same sometime this week.

Given that we are all in the same (nearly year long) hot and humid conditions and all using the same dynojet means we can make direct comparisons between our vehicles with a great deal of confidence.

If you have a dyno, please post the printout of the dynoscan here, with details of the results, mod list, etc.

Also, if you can get the runfile, please email it to me and I can make a nice graph and post it for you (I have the Winpep software).

Even if you've posted the dyno elsewhere, at least post the link to it -- I think it will be helpful to collect all of the proven power info here.

Similarly, if you have data/runfile from another shop's dynojet in the region, it should also allow for a very close comparison, so feel free to post that here as well.

Thanks :tiphat:

~Jordo

Hey guys -- a hot 95*+ F day with insane humidity. Terrible day to dyno :D

This is for a bone stock 7AT after 5K with Nissan Ester oil. Oil temps ranged from 190 - 220; power readings ranged from about 275 to 280 over sucessive runs, with considerable consistency.

Had some interference on the signal pick up, so here are two of the cleanest and clearest runs to compare K&N (RED) vs paper filter (BLUE), but I'm happy to post them all if anyone wants to see them -- nothing to hide here.

http://www.the370z.com/members/jordo...n-vs-paper.jpg

http://www.the370z.com/members/jordo...ed-comparo.jpg

Please add your dynojet 242 or 248 model dynos here, or shoot me the runfiles and I can make a chart for you ;)

Impressive! 6whp/6wtq just from filters? Whenever I get my mods installed, I'll go there to dyno. They are estimating it to cost $300-400 to fit my HKS exhaust from my G35 onto the 370Z.

Where is proven power at? I'm thinking about having mine dynoed to see what kind of power i have with my mods.

Thanks! Check out the gains throughout the rev range!

Say, do you have a baseline from them? If so, please post the graph or email me the runfile :D

if not, I'd do that first so you can see exactly where you gain or lose ;)

They are essentially on Busch Blvd which becomes Bullard Pkwy after 56th street and then becomes Temple Terrace Hwy.

If coming down Bush from 275, make a U-turn at Davis road and the shop will be on the right.

It's a bunch of beige garages -- no clear sign on the road.

How clean were your OEM filters when you set the baseline?

Wow... nice results on the drop-ins. I would have expected much less, if measurable at all.

Clean -- less than a few thousand miles.

Admittedly, those two runs showed the greatest gains, and subsequent runs put them closer, but the range only varied by a few whp per dyno, so the general conclusion that the K&N filters made some gains throughout the rev range is a valid one.

Both are the first runs after allowing the car to cool down a bit and the oil temps were at ~200 exactly for each, so they are the most equivalent runs for comparison.

Similar differences from baseline were found on a dynapack in the K&N thread, so I'm not all that surprised -- happy, but not surprised :)

Here's the first dyno plot comparing the K&N panel filters with OEM cats (BLUE) vs K&N + Test pipes (RED).

http://www.the370z.com/members/jordo...s-k-n-w-tp.jpg

Gains were decent throughout the powerband. I purcahsed these test pipes off of ebay which includes an extra long defouler
http://cgi.ebay.com/ebaymotors/Nissa...Q5fAccessories

Oddly, the bolts it came with were the wrong size -- otherwise, well worth the cost.

More dynos and commentary to be posted in a few minutes...

Here's another chart that shows some of the gains throughout the rev range.

http://www.the370z.com/members/jordo...ed-comparo.jpg

One interesting thing we noted today -- the Z either needs a key cycle or two to allow the ECU to adapt (we have no datalogging devices, so this is just speculation), or it is really wise to allow a little cool down before dynoing.

In either case, the above runfiles are fair comparisons; both were the first runs after allowing the car to cool down a bit and the oil temps were at ~200* F.

Headers, cat back, intakes, and finally tuning yet to come... stay tuned!

Nice gains. The numbers seem to make sense. I made 275/225 stock then 286/235 with K&N drop-ins and HFC's....test pipes definitely seem to be a good buy.

I'm surprised they were able to get an accurate TQ curve...they were never able to with my Z and several others. I want to dyno mine again once the weather gets cooler and to see if the ecu "learned" anything after awhile. Let me know next time you dyno your car there again and I'll head up there with you.

I'll be at S&R Performance Saturday if you guys are interested. Their Poker Run is Sunday.

Thanks!

They seem to have some issues with the signal pick up... I think they swapped out the sensor for my runs.

Say, do you either have your drf files or would you mind calling them to give permission for Daryl to share them with me -- if that's cool just tell 'em it's okay to share the files with Jordan.

I just like to have the data to see how consistent the values are across vehicles and set-ups.

Hey, tell Taylor that Jordan says hi!

Poker run???

here's some information on the Poker Run.
S&R poker run 2010 !!!!! <--- check it out - G35Driver

^^^ Thanks :tup:

Son of a fvcking whore -- I just got a CEL tonight :mad:

Just to make sure this isn't something else -- is the "service engine soon" light the same for all issues or is it possible that something else is fvcked up?

Argh -- guess I need to get the code to see what's the matter. I suppose it could also be the mysterious evap problem some people have.

What time are they working on your car? Are you going there to do the baseline/motordyne manifold comparison? If so, I'll probably go.

Did you put steel wool in the O2 sensor bungs? CEL's on test pipes are pretty common....you might need to get O2 extenders

Also, I sent him a PM on TampaRacing.com to send you my drf files

Thanks for the drf request :tup:

No, but looks like I'll have to. Confirmed the code as for catalyst. These had the extra long defoulers already, so I'm really surprised... grrr. :mad:

What kind of steel wool do you guys use -- not the soapy ones I take it?

I couldn't find plain steel wool at the store -- will copper wool do or should I keep looking for steel?

No problem.

It probably doesn't matter but I was able to find normal steel wool at Publix/Sweetbay...I would guess Lowes and Home Depot carry it as well. It should take care of your CEL issue

Hmm -- guess I'll try looking elsewhere. So use the stuff that looks like actual fabric in consistency, not the stuff that resembles a balled up net?

Oh, what's your name when I follow up with Daryl? Thanks again!

No it looks like a balled netted material and comes in the shape of a small sponge pad. My name is Phil

Ah -- okay. Thanks, Phil! :tup:

Did you try the steel wool yet?

Did they send you my graphs yet?

Haven't had a chance to do either -- I'll call them tomorrow or Wedensday. Thanks again!

Dynoing the M370 manifold at Proven power on Saturday at 1030...could use an extra hand to swap the manifold out quickly after the baseline if anyone can make it

If I take off work Friday, I'll see if I can get my tune Friday and then I could help you out Saturday and dyno mine as well.

That would be cool...I want to see what yours does on their dyno. Weather on Friday and Saturday looks good too! They would only charge you $30 for 3 pulls

Exactly my thoughts.

Hey all,

Couple of folks have PM'd me asking about the S-tune exhaust.

It is installed and sounds great! The butt dyno, while imprecise, detects some mid range gains.

But... data > vague impressions with your butt, so I'll be hitting the dyno sometime this week and will post detailed graphs of the results soon :tup:

Still have my intakes to install and recently received a set of shiny PPE headers -- these are beautiful, BTW! Each has a nice high temp, ceramic coating, stepped primaries, and sweet merge collector -- should make decent gains.

Just got to get them on... dynos will be posted for that as well :D

Looking forward to seeing the results of the headers!

Well, the Nismo S-tune exhaust sounds great, but nothing to write home about in terms of gains. Picked up a nice bump down low, but other gains throughout the rest of the rev range were very minimal at best.

I think this pretty much confirms that the best bang-for-the buck gains are to be had with just the test pipes...

http://www.the370z.com/members/jordo...n-w-tp-cbe.jpg

http://www.the370z.com/members/jordo...ed-camparo.jpg



However, check out the gains going from just K&N filters to full exhuast (minus headers), and going bone stock to the three bolt on's!

http://www.the370z.com/members/jordo...n-w-tp-cbe.jpg

http://www.the370z.com/members/jordo...k-n-tp-cbe.jpg



Very, very curious to see what the headers do... if the major bottlenecks are the cats, then I'm not overly optimisitic at the moment, but we'll see...

Also still have the pod filters. Probably won't be able to make use of the OEM airboxes as I'd hoped, but will have plenty of heat shielding so should work nicely. Probalby install and dyno them either later this week or next week.

Hmm... one more. This is of another run with the test pipes vs TP + CBE (both with K&N) and the gains look more even throughout hte rev range... consistent bump of about 3-5 to the tires.

http://www.the370z.com/members/jordo...-w-tp-cbe2.jpg

Doesn't really change my conclusions, but just thought it was interesting that this one showed improvement throughout the powerband.

Great job on doing all the dyno comparisons. I really want to see how my car does on a dynojet.

Thanks :tiphat:

Do you know off hand if there are any independent before and after dynos that show gains of CBE after a test pipe?

I'm starting to think that whatever the first exhaust mod done is, that ends up being the the one that picks up 10 -15 whp (with test pipes being the least expensive for that gain) and everything else just adds another 3-7 here and there.

I can't believe that the stillen or FI exhausts are all that different in design. There's only so many ways to massage a N/A motor with exhaust tubing :icon14:

However, this does leave me wondering further about seeing the difference between X, H, and Y pipes.

I'd say the two major improvements in the Nismo S-tune design are the better flowing Y and the straighter flowing tail pipes out the single mufler.

Has anyone switched between any of these and done comparison dynos?

I have to redyno mine soon eventually and post it here the result.

Cool.

Will be experimenting with another set of K&N filters and will be going tomorrow if they can get me on the dyno to test.

Yah, might give them a call first. Is that your custom intake you are talking about?

I hope to get good numbers this time

Sort of. OEM intake tubes and MAFS tube (cut from airbox) attached to two larger K&N filters (RX-4870 Amazon.com: K&N RX-4870 Universal X-Stream Clamp-on: Automotive: Reviews, Prices & more ). Black metal canister-like heat shielding. Either will work or won't -- I'll take pics if I keep it on.

I think my last attempt failed because the filters were too small and keeping the factory airboxes on created too much restriction -- nice idea, but just didn't work.

Whether or not it picks up any power, I'll be putting on the HPS intake tubes soon and testing those as well.

EDIT: Just tried them out -- test drive felt hesitant so I'm going to wait until after the intake tubes get here to experiment one last time while I'm on the dyno -- I have no idea why I'm not having any luck with this -- this isn't rocket science :icon14:

Got the HPS intake tubes on... not too bad an install (thanks in part to a buddy of mine who lended a hand).

Didn't even need to take the strut bar off -- but what a HUGE PITA getting the factory airboxes in and out now... I may not bother experimenting with filters again just because of the hassle involved in the swap :icon14:

Will dyno tomorrow. If I gain a few whp, I'll be happy, if not, I'll probably sell these off...

Finally dynoed with the HPS tubes and also a final experiment with K&N filters.

I only have a few comments:

1. The HPS tubes appear to do NOTHING.

EDIT: After further evaualtion of the dynos, old and new, I would say these are worthwhile in conjunction with K&N panel filters. Alone, not sure, but with high flow filters, reasonable bang for the buck, but a slight PITA to install.

Carefully reviewing the dynos, it looks like I intermittently lost or gained 2-3 whp at various points -- perhaps a little touch up with a tune will help.

However, if with tuning the overall gain will be less than 5 whp, I'm just going to sell these off -- worthless IMO.

2. No idea why the cone filters flow so poorly -- possibly all due to heat soak? They were shielded, but maybe not sufficiently?

No idea, but for now I would say the factory airboxes plus K&N panel filters is definitely the way to go.

Moreover, I would add that I've seen dynos where the much acclaimed Stillen intakes only make about 6-8 whp -- well below what they advertise, and the same gain you can get from just the K&N panel filters, which are like 1/4 the price...

http://www.the370z.com/members/jordo...ne-filters.jpg


Oh... and just to amuse myself... here's my "bragging rights" dyno. I'm at 300+ whp with std correction apparently... wheee.... :rolleyes:

http://www.the370z.com/members/jordo...ights-dyno.jpg

Of course, N/A, I go by SAE correction (tends to overcorrect for FI, BTW), so this is fairly empty boasting...

One other thought: I'd say that N/A the Z is probably maxed out around 295-310 (figure closer to the higher end with lighter pulleys and LTH's). With similar mods, anything less than that is probably an overly conservative estimate and anything over 310 is probably a happy dyno.

I see no clear evidence of differences in drivetrain loss from MT to AT either -- in fact, with comparable mods, mine seems to puts down as much or even a bit more than the 6 speeds have on PP's dyno -- go figure.

That's all for now... :hello: