Legit_LGT Posted March 30, 2015 Share Posted March 30, 2015 Event: Dyno Pull Loaction: COBB Surgeline Date: 1/13/15 Ambient Temp: 55° F Elevation: 200 ft Weather: Sunny Car: 2006 Subaru LGT Wagon Dyno Info: Mustang Transmission: 5EAT Gear: 3rd Peak Horse Power at RPM: 5600 Peak Torque at RPM: 2200 Target Boost: 15 PSI Target AFR: 14.6 Fuel: 92 Engine/Power Modifications: COBB AP V3, COBB SF intake and air box, COBB downpipe, COBB Up-pipe, COBB turbo heat shield, Invidia TBE, Perrin TMIC, DW65c fuel pump Driveline Modifications: N/A Suspension Modifications: N/A…future plans for sway bars, end links and springs Other Modifications: COBB light weight crank pully Link to comment Share on other sites More sharing options...
scoobyscoodle Posted March 30, 2015 Share Posted March 30, 2015 360 wtq at 15psi on a stock turbo and pump gas? Link to comment Share on other sites More sharing options...
joeleodee Posted March 31, 2015 Share Posted March 31, 2015 ........and with a target AFR of 14.6 at wot, this thing should go kaboom. OP, please clarify. Link to comment Share on other sites More sharing options...
stuck686 Posted March 31, 2015 Share Posted March 31, 2015 must not be a stock turbo...peak torque at 2200rpm.. Link to comment Share on other sites More sharing options...
Legit_LGT Posted April 1, 2015 Author Share Posted April 1, 2015 @scoobyscoodle – The dyno was done with Chevron 92 Octane (pump gas) @joeleodee – The target AFR of 14.6 you are referring to is from one of the three maps created for my AP. That number is from the map with the most power gains. Look at the legend on the bottom of the graph. @stuck686 – It is indeed a stock VF40 turbo. Link to comment Share on other sites More sharing options...
CapnJack Posted April 1, 2015 Share Posted April 1, 2015 OP, I believe he is asking for target AFR under WOT. Should be around 11.2-11.8 at WOT, not 14.6. It will be around 14.6-14.7 during cruising or idle(stoichiometric ratio). Link to comment Share on other sites More sharing options...
Rhitter Posted April 1, 2015 Share Posted April 1, 2015 I really don't understand how your spool is so damn fast. A stock turbo at 15 psi is usually much lower than 360 wtq. Makes me wonder what Cobb Surgeline knows... If you look at the AFR in the graph it looks to be more inline with expectations (11.1 ish) My OBXT build Link to comment Share on other sites More sharing options...
Legit_LGT Posted April 1, 2015 Author Share Posted April 1, 2015 You're correct, I misinterpreted the the statement. When monitoring that gauge on my AP, the AFR at WOT bounces between 11.2 and 11.4. Link to comment Share on other sites More sharing options...
scoobyscoodle Posted April 1, 2015 Share Posted April 1, 2015 The vf40 on e85 at 20psi wouldn't even make those torque numbers (let alone 15psi), and it's common knowledge that you will always make more wtq on e85, all other things equal. And peak torque at 2200? I know the vf40 is a small turbo, but there's no way it's seeing peak boost before 2500, let alone peak torque. 92 octane is pump gas. I know the unlocked torque converter on the 5eat can multiply torque momentarily, I suspect that is what is happening here. Link to comment Share on other sites More sharing options...
Legit_LGT Posted April 1, 2015 Author Share Posted April 1, 2015 The vf40 on e85 at 20psi wouldn't even make those torque numbers (let alone 15psi), and it's common knowledge that you will always make more wtq on e85, all other things equal. And peak torque at 2200? I know the vf40 is a small turbo, but there's no way it's seeing peak boost before 2500, let alone peak torque. 92 octane is pump gas. I know the unlocked torque converter on the 5eat can multiply torque momentarily, I suspect that is what is happening here. Alright, what you're saying is that it is not a vf40 due to how quick it achieved peak boost and because of the unlocked torque converter the torque number is not legit... I just posted what the graph shows. It's all there. Link to comment Share on other sites More sharing options...
CapnJack Posted April 2, 2015 Share Posted April 2, 2015 I believe it is a VF40. I also agree with scoobyscoodle that the torque converter may be causing some funky readings on the dyno. My guess is you are more in the range of 270WTQ. The 5EAT is pretty parasitic and typically runs lower numbers on the dyno compared to the 5 or 6 MT From what I remember, stall speed on the 5EAT is about 3500RPM so there is quite a bit of torque multiplication that can occur under load down low in the RPM range that will decrease as engine speed increases closer to stall speed. At about the 2200RPM range, the trans starts to really put power to the drive train and torque multiplication can occur with some large numbers, as indicated. I would be curious, if you wouldn't mind, calling Cobb and asking what their opinion is on this. Link to comment Share on other sites More sharing options...
Legit_LGT Posted April 2, 2015 Author Share Posted April 2, 2015 I believe it is a VF40. I also agree with scoobyscoodle that the torque converter may be causing some funky readings on the dyno. My guess is you are more in the range of 270WTQ. The 5EAT is pretty parasitic and typically runs lower numbers on the dyno compared to the 5 or 6 MT From what I remember, stall speed on the 5EAT is about 3500RPM so there is quite a bit of torque multiplication that can occur under load down low in the RPM range that will decrease as engine speed increases closer to stall speed. At about the 2200RPM range, the trans starts to really put power to the drive train and torque multiplication can occur with some large numbers, as indicated. I would be curious, if you wouldn't mind, calling Cobb and asking what their opinion is on this. Thank you for the detailed explanation. Link to comment Share on other sites More sharing options...
Th3Franz Posted April 4, 2015 Share Posted April 4, 2015 I have also dyno'd 5EATs and yes, the torque multiplication skews the peak torque number like that. -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
joeleodee Posted April 4, 2015 Share Posted April 4, 2015 I get that. However, that 255whp number seems kind of high for a stock turbo 5eat at only 15psi. Maybe I'm wrong. Link to comment Share on other sites More sharing options...
BL5BO Posted April 16, 2015 Share Posted April 16, 2015 I'm on stock turbo and just shy of 250whp/tq @15psi My "Alpine White" 06 LGT: The Kabigon [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
pnmid Posted April 16, 2015 Share Posted April 16, 2015 I recently went Stage 2. I'd like Cobb Surgeline to tune my wagon! Link to comment Share on other sites More sharing options...
MrTris Posted April 22, 2015 Share Posted April 22, 2015 250-260 is about right for a stock turbo Stage 2 car. Link to comment Share on other sites More sharing options...
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