S4 T-II Dyno
#1
Full Member
Thread Starter
Join Date: Dec 2002
Location: Kirkland, WA
Posts: 116
Likes: 0
Received 0 Likes
on
0 Posts
S4 T-II Dyno
Here is my Dyno sheet from last Month with ~12.5 lbs boost. Ralph from Groundzero did the tune. He recommended I come back at a later time with WA gas (Oregon is supposedly year round crappy).
I think the numbers are alright, what do you guys think?
Mods:
-Power FC with Banzai Adap. Kit
-Pineapple Rebuilt with Oil/Water Jacket Mods+Small Street Port
-550cc Prim/1000cc Sec.
-Full RB Exhaust
-Corksport FMIC
-Walbro 255
-Greddy Profec B
-Adjust. Fuel Reg.
I think the numbers are alright, what do you guys think?
Mods:
-Power FC with Banzai Adap. Kit
-Pineapple Rebuilt with Oil/Water Jacket Mods+Small Street Port
-550cc Prim/1000cc Sec.
-Full RB Exhaust
-Corksport FMIC
-Walbro 255
-Greddy Profec B
-Adjust. Fuel Reg.
#4
Full Member
Thread Starter
Join Date: Dec 2002
Location: Kirkland, WA
Posts: 116
Likes: 0
Received 0 Likes
on
0 Posts
I honestly can't remember what he said about the dip in torque...
Ralph told me that my motor is capable of running more boost safely (max knock reading 10), but that I should have it tuned with a tank of WA State Gas since the gas in Oregon is so inferior.
The car pulls really hard- I've seen 105 kpa (15lbs?) stored as a max reading and it gets there quickly...Not sure if the difference in gas can be that great. I guess I'll find out when I have it re-tuned.
#6
Full Member
Thread Starter
Join Date: Dec 2002
Location: Kirkland, WA
Posts: 116
Likes: 0
Received 0 Likes
on
0 Posts
Seemed hard to believe for me too...Ralph did say that in tuning the torque figure gets often overlooked in favor of bigger HP numbers, although it is actually more important. Once I swap the exhaust again and get the car through emissions in a few months (rats nest and everything else still there), I'll take it back to the Dyno and see how much more it will put down with a few more pounds of boost.
Trending Topics
#10
Full Member
Thread Starter
Join Date: Dec 2002
Location: Kirkland, WA
Posts: 116
Likes: 0
Received 0 Likes
on
0 Posts
Ralph pointed out to me the opposite on the torque and power curves. He said that he looks specifically for them to drop off like that.
In order to give better answers I probably would have to talk with both Rob and Ralph again with pencil and paper handy... I'm pretty much a novice and with Rob and Ralph chatting a what seems a mile a minute I reach information overload quickly...
#12
Full Member
Thread Starter
Join Date: Dec 2002
Location: Kirkland, WA
Posts: 116
Likes: 0
Received 0 Likes
on
0 Posts
arghx- Thanks for posting those! comparing those with mine I now understand and agree with your first comment. The SAE one you've posted seems to have a similar drop off in both torque and power curves at a lower RPM just like mine.
The first one starts out with pretty much identical curves to mine although torque stays more even and power continues to climb at higher RPM.
Maybe my turbo does run out of steam, but if I understood Ralph correctly he believes that the motor and turbo is capable to safely make quite a bit more power with a few pounds of added boost... but I would need to return & retune with quality WA State gas in my tank...Oregon is now supposedly selling an inferior grade of blended gas- did a google search and here is what I found: http://www.das.state.or.us/ODA/news/071219ethanol.shtml
The first one starts out with pretty much identical curves to mine although torque stays more even and power continues to climb at higher RPM.
Maybe my turbo does run out of steam, but if I understood Ralph correctly he believes that the motor and turbo is capable to safely make quite a bit more power with a few pounds of added boost... but I would need to return & retune with quality WA State gas in my tank...Oregon is now supposedly selling an inferior grade of blended gas- did a google search and here is what I found: http://www.das.state.or.us/ODA/news/071219ethanol.shtml
#13
Lives on the Forum
Normally, torque doesn't drop as fast versus the opposite end when it's climbing.
Having really high torque numbers also is a sign...
...that there's a restriction in the system.
If this is a hybrid, you should be fine, and I would blame too restrictive of an exhaust.
If this is an aftermarket turbo, your turbine A / R is too small.
-Ted
Having really high torque numbers also is a sign...
...that there's a restriction in the system.
If this is a hybrid, you should be fine, and I would blame too restrictive of an exhaust.
If this is an aftermarket turbo, your turbine A / R is too small.
-Ted
Thread
Thread Starter
Forum
Replies
Last Post
HalifaxFD
Canadian Forum
126
05-09-16 07:06 PM