Topspeed Dyno sheet? Has anyone ever seen one?
KareBear
Joined: Nov 2006
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From: San Jose, CA
Car Info: '07 SWP STi
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From: Slumboldt
Car Info: I is not STiYLIN n e moar
Well now that the "drama douchebags" of the BAIC got out all their "feelings" for me, look what I found!
Tell me is a 13.0 AFR good? Also why is the filter value @ 60 where mine from GST is 11? What is that in regards to?
Please, people with actual information about the topic.....
Tell me is a 13.0 AFR good? Also why is the filter value @ 60 where mine from GST is 11? What is that in regards to?
Please, people with actual information about the topic.....
Fine ill drop some knowledge
The 13.0 is likely before dip in (far left). As you can see, it dips as low as 11 and avg is around 11.4, for 93 this is likely ok, although most bay area tuners may not agree ( 11.5 on 100, 11.0 on 91 seem to be the targets). Whats considered a safe afr is actually a huge can of worms that I won't open.
Smoothing (the filter value) is how much the graphs are interpolated, it can be bad if the tuner is trying to smooth out a rough map, but in general for the afr/boost traces, you need quite a bit of smoothing since the sensors sampling rates are pretty high
In general this sheet (afr/boost) will have much higher filter values than the over all output graph (at least from what I learned playing on another Mustang)
I can tell you one thing, this car wont touch a 300whp car from a bay area dyno. Simply from the boost and afr ratios alone, its far from an insane-o tune
The 13.0 is likely before dip in (far left). As you can see, it dips as low as 11 and avg is around 11.4, for 93 this is likely ok, although most bay area tuners may not agree ( 11.5 on 100, 11.0 on 91 seem to be the targets). Whats considered a safe afr is actually a huge can of worms that I won't open.
Smoothing (the filter value) is how much the graphs are interpolated, it can be bad if the tuner is trying to smooth out a rough map, but in general for the afr/boost traces, you need quite a bit of smoothing since the sensors sampling rates are pretty high
In general this sheet (afr/boost) will have much higher filter values than the over all output graph (at least from what I learned playing on another Mustang)
I can tell you one thing, this car wont touch a 300whp car from a bay area dyno. Simply from the boost and afr ratios alone, its far from an insane-o tune
Last edited by ucbsti; Aug 8, 2007 at 04:50 PM.
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From: Slumboldt
Car Info: I is not STiYLIN n e moar
Fine ill drop some knowledge
The 13.0 is likely before dip in (far left). As you can see, it dips as low as 11 and avg is around 11.4, for 93 this is likely ok, although most bay area tuners may not agree ( 11.5 on 100, 11.0 on 91 seem to be the targets). Whats considered a safe afr is actually a huge can of worms that I won't open.
Smoothing (the filter value) is how much the graphs are interpolated, it can be bad if the tuner is trying to smooth out a rough map, but in general for the afr/boost traces, you need quite a bit of smoothing since the sensors sampling rates are pretty high
In general this sheet (afr/boost) will have much higher filter values than the over all output graph (at least from what I learned playing on another Mustang)
I can tell you one thing, this car wont touch a 300whp car from a bay area dyno. Simply from the boost and afr ratios alone, its far from an insane-o tune
The 13.0 is likely before dip in (far left). As you can see, it dips as low as 11 and avg is around 11.4, for 93 this is likely ok, although most bay area tuners may not agree ( 11.5 on 100, 11.0 on 91 seem to be the targets). Whats considered a safe afr is actually a huge can of worms that I won't open.
Smoothing (the filter value) is how much the graphs are interpolated, it can be bad if the tuner is trying to smooth out a rough map, but in general for the afr/boost traces, you need quite a bit of smoothing since the sensors sampling rates are pretty high
In general this sheet (afr/boost) will have much higher filter values than the over all output graph (at least from what I learned playing on another Mustang)
I can tell you one thing, this car wont touch a 300whp car from a bay area dyno. Simply from the boost and afr ratios alone, its far from an insane-o tune
I am however not trying to compare e-penes with my friend but trying to understand why he is making so much power on the same dyno than everyone else I have seen (limited to NorCal).
I also know and appreciate my drivability (sp?) that my pro tuner has provided me and well as it has lasted 50k now! :knocksonwood:
lol..i said all that in simpler terms at the beginning of the thread
Their mustang reads high, period. Thats why I said what matters most is what a stock sti (or evo) baselines at, and what their tuned cars trap at in the 1/4
The dyno is a tuning tool, deltas and hp under the curve are far more important than peak numbers. Its extremely hard to compare any 2 dynos, let a lone 2 dynos, on different coasts (ie different weather conditions), different cars, different gas, etc
The two closest reading dynos ive seen are the EIP and GST mustang dynos. My car was within 3whp consistently on both. Although GSTs dyno room got real hot and muggy and my car went pig rich for part of the pull
Their mustang reads high, period. Thats why I said what matters most is what a stock sti (or evo) baselines at, and what their tuned cars trap at in the 1/4
The dyno is a tuning tool, deltas and hp under the curve are far more important than peak numbers. Its extremely hard to compare any 2 dynos, let a lone 2 dynos, on different coasts (ie different weather conditions), different cars, different gas, etc
The two closest reading dynos ive seen are the EIP and GST mustang dynos. My car was within 3whp consistently on both. Although GSTs dyno room got real hot and muggy and my car went pig rich for part of the pull
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lol..i said all that in simpler terms at the beginning of the thread
Their mustang reads high, period. Thats why I said what matters most is what a stock sti (or evo) baselines at, and what their tuned cars trap at in the 1/4
The dyno is a tuning tool, deltas and hp under the curve are far more important than peak numbers. Its extremely hard to compare any 2 dynos, let a lone 2 dynos, on different coasts (ie different weather conditions), different cars, different gas, etc
The two closest reading dynos ive seen are the EIP and GST mustang dynos. My car was within 3whp consistently on both. Although GSTs dyno room got real hot and muggy and my car went pig rich for part of the pull
Their mustang reads high, period. Thats why I said what matters most is what a stock sti (or evo) baselines at, and what their tuned cars trap at in the 1/4
The dyno is a tuning tool, deltas and hp under the curve are far more important than peak numbers. Its extremely hard to compare any 2 dynos, let a lone 2 dynos, on different coasts (ie different weather conditions), different cars, different gas, etc
The two closest reading dynos ive seen are the EIP and GST mustang dynos. My car was within 3whp consistently on both. Although GSTs dyno room got real hot and muggy and my car went pig rich for part of the pull
east coast has 2 octane or is it 3 octane better gas than we do...so their "pump" gas can create more hp.
Yes, 2-3 octane points will muster potentially 10-20whp due to higher knock resistance (and ca **** 91 really sucks *****), but there arent very many stock turbo stis even close to 303whp without at least 100 oct, if not C16/leaded race gas. Given afr and boost (only 18.3psi max), this car would not come close to 303whp on a local MD
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FYI,
The 'real' TopSpeed have a dynojet and are in GA.
Also, the level of smoothing to the actual smoothing number in trace graph view on a mustang also differs from software version to software version.
The 'real' TopSpeed have a dynojet and are in GA.
Also, the level of smoothing to the actual smoothing number in trace graph view on a mustang also differs from software version to software version.
