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Old 03-15-2013, 04:39 PM   #657
sponaugle
Scooby Specialist
 
Member#: 4498
Join Date: Feb 2001
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
WRX H6-3.0 Turbo
www.surgelinetuning.com

Exclamation

Quote:
Originally Posted by xluben View Post
My car dropped about 1/2 second per 40WHP on Virtual Dyno. Loosing a full second with 50WHP is a bit surprising based on what I've seen, but all my testing was within a single gear.
Yep, based on road feel I suspect it is more like 70-80whp difference.. and of course in 4th gear the boost is higher then what I had on the dyno.. especially in the 24psi run. Boost control with the current wastegate has been difficult because I have the actuator preloaded a lot, which makes it temperature dependent.

If anything this shows how difficult it is to just dyno tune.. so many different variables on the road.

I'll turn on the flat foot and do some more longs this next week.

Jeff
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