FW Motors and Snail Performance - DYNO DAY!!
05-27-2015, 07:04 AM
#111
Registered User
iTrader: (10)
Join Date: Nov 2002
Location: Rocklin, Ca
Posts: 582
Car Info: 2002 Impreza 2.5 RS Midnight Black Pearl
Something isn't right... Travis said the graphs were wheel power, not changing the calculations to engine power. Only 2 possible solutions:
A) My 2.5RS with a full NA Stage 2, bordering on Stage 3 is only producing 15 more HP than stock (at 55k miles). If that is the case I'm done with the car and selling it. Lol.
B) Those other cars were modded or at least tuned.
Maybe Travis can chime in?
A) My 2.5RS with a full NA Stage 2, bordering on Stage 3 is only producing 15 more HP than stock (at 55k miles). If that is the case I'm done with the car and selling it. Lol.
B) Those other cars were modded or at least tuned.
Maybe Travis can chime in?
05-27-2015, 08:25 AM
#112
What do I need to chime in about?
The dyno gives out wheel power not power at the flywheel. Also the only real way to see the improvement of the mods done to your car would to have done a base pull on the dyno. This way you can compare the before and after.
The dyno gives out wheel power not power at the flywheel. Also the only real way to see the improvement of the mods done to your car would to have done a base pull on the dyno. This way you can compare the before and after.
05-27-2015, 08:30 AM
#113
Something isn't right... Travis said the graphs were wheel power, not changing the calculations to engine power. Only 2 possible solutions:
A) My 2.5RS with a full NA Stage 2, bordering on Stage 3 is only producing 15 more HP than stock (at 55k miles). If that is the case I'm done with the car and selling it. Lol.
B) Those other cars were modded or at least tuned.
Maybe Travis can chime in?
A) My 2.5RS with a full NA Stage 2, bordering on Stage 3 is only producing 15 more HP than stock (at 55k miles). If that is the case I'm done with the car and selling it. Lol.
B) Those other cars were modded or at least tuned.
Maybe Travis can chime in?
05-27-2015, 09:02 AM
#114
Los Banditos de Moist
Join Date: Apr 2008
Location: Roseville
Posts: 216
Car Info: 98RS slutbox
05-27-2015, 09:19 AM
#116
I'm not going to sit here and argue about numbers the dyno puts out. I have had the argument already with Mike at GST and the he apologized after running the 600whp Sti we tuned on his dyno and it made the same numbers.
Last edited by Poweredbysnail; 05-27-2015 at 09:51 AM.
05-27-2015, 09:47 AM
#117
A dyno is just a tool. Before vs after is all that matters. If you don't have the before, an "after" isn't gonna do you much good.
And yes, an N/A impreza picking up 15hp from all bolt ons is actually pretty good. Impressive even.
Go to the track and see what your car traps if you want a better indication of speed/power.
And yes, an N/A impreza picking up 15hp from all bolt ons is actually pretty good. Impressive even.
Go to the track and see what your car traps if you want a better indication of speed/power.
Last edited by Vladi; 05-27-2015 at 09:56 AM.
05-27-2015, 11:53 AM
#118
Registered User
iTrader: (10)
Join Date: Nov 2002
Location: Rocklin, Ca
Posts: 582
Car Info: 2002 Impreza 2.5 RS Midnight Black Pearl
My point exactly. Even the 02 numbers are showing VERY close to stock ENGINE stats for those cars. The Dyno sheets say "ENG Power/ENG Torque", which is in particular why I asked.
And yes, we can all argue that comparing different dyno's is a horrible comparison, but two cars ran practically back to back on the same dyno SHOULD be a decent comparison. Especially if we have 2-3 cars that are all stock and their output is predictable. I mean, honestly, if the dyno is that UNRELIABLE then the before/after of putting parts on a car would be practically useless.
If these are WHP numbers, then add 20% drivetrain loss and the 2010 WRX is pushing 310HP CHP, and 295 CHP for the 2015, and 275 CHP for the 2002 (which is blow your mind amazing for a 14 year old stock car unless it has a brand new, tuned motor). Those are NOT stock numbers and we all know that. Even with the likelyhood of the WRX's being rated conservatively in 09/10 (which has been discussed), 310 CHP is incredible.
I think looking at that boost curve for the 02 WRX just shows something was done to it... Stock WRX would taper to 6-7 PSI at redline, while this one holds damn near rock steady at 12-13psi.
All I was trying to do was get a rough estimate of where my car was at. Honestly, I thought it would be a long shot to have a totally stock car there on Sat, but it would have been nice.