Proven Power Dyno Database Thread

[ddvette9]

jordo, just did 3 pulls at proven power the other day. I have top speed exhaust and custom short rams and peaked at 275whp and 229 torque. Better than what I expexted, especially for an exhaust that uses the stock y-pipe (getting that changed out soon) and heat soaked short rams.

Anyways, im with you. Full bolt ons and we are talking maybe 290-305/310 whp NA. Our cars dont like to dyno very high. After the Y-pipe im prob done with mods for speed

[Jordo!]

Originally Posted by ddvette9

jordo, just did 3 pulls at proven power the other day. I have top speed exhaust and custom short rams and peaked at 275whp and 229 torque. Better than what I expexted, especially for an exhaust that uses the stock y-pipe (getting that changed out soon) and heat soaked short rams.

Anyways, im with you. Full bolt ons and we are talking maybe 290-305/310 whp NA. Our cars dont like to dyno very high. After the Y-pipe im prob done with mods for speed

Hey man, YGPM.

You may want to ditch the short rams -- I have no idea exactly why, but they don't seem to perfom as well as the OEM airboxes with a high flow panel filter.

Also, yes, I suspect that the greatest gains in an exhaust come from swapping out the OEM Y-pipe (still not clear on whether improved Y, H or X yeilds better gains).

I would see about a HFC or test pipes too -- I will have a set of TP's for sale very soon if you are interested.

[ddvette9]

Nissan 370Z Z34 G37 VQ37 08-10 Exhaust Y-Pipe, Y Pipe - eBay (item 230498398242 end time Dec-09-10 12:15:10 PST)

since i already have the exhaust, you think this should work ok.

and you really think i should go back to stock air boxes?

[Jordo!]

Originally Posted by ddvette9

Nissan 370Z Z34 G37 VQ37 08-10 Exhaust Y-Pipe, Y Pipe - eBay (item 230498398242 end time Dec-09-10 12:15:10 PST)

since i already have the exhaust, you think this should work ok.

and you really think i should go back to stock air boxes?

The Y-pipe will probably net you another 3-5 on the average throughout the rev range -- I'd say 6-8 max. Price seems reasonable.

As to the SRI's, unless you did a baseline with them off to confirm they made power over OEM, yeah I do. I think you'll make more power with the stock airboxes plus K&N high flow panel filters.

If it wouldn't be a huge PITA to test, I would at least try it out.

Also, next time you go, you might want to do a second set of runs -- the ECU takes a full pulls to adjust itself, and I always see the gains "magically" appear on the second set of runs.

[ddvette9]

they charge 30 for 3 runs. do you know what they charge for the hour. and would you be interested in meeting up and maybe splitting the hour

[Jordo!]

Originally Posted by ddvette9

they charge 30 for 3 runs. do you know what they charge for the hour. and would you be interested in meeting up and maybe splitting the hour

Not sure what they charge for the hour -- call them and ask?

I won't be on the dyno for a while -- kind of run out of things to do until I get into tuning.

[Nismoracer]

Originally Posted by Jordo!

Hey man, YGPM.

You may want to ditch the short rams -- I have no idea exactly why, but they don't seem to perfom as well as the OEM airboxes with a high flow panel filter.

Also, yes, I suspect that the greatest gains in an exhaust come from swapping out the OEM Y-pipe (still not clear on whether improved Y, H or X yeilds better gains).

I would see about a HFC or test pipes too -- I will have a set of TP's for sale very soon if you are interested.