M-Tune on pump and E85
10-31-2011, 04:52 AM
#5
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Is this a 'before and after'? Interesting how much higher your tq is over hp?
Yes, what mods and what, if any, were the other changes apart from M tune and E85?
Yes, what mods and what, if any, were the other changes apart from M tune and E85?
10-31-2011, 08:08 AM
#6
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Is that a boost of 16 lbs for gas and 22lbs for E85? That is yielding 67 more HP using higher boost or about 11 HP per lb of boost.
Nice numbers but I would run at least 93 octane for 16 lbs boost on gas. Interesting that the AFR were different by almost a point between the two runs at 6K RPM.
Nice numbers but I would run at least 93 octane for 16 lbs boost on gas. Interesting that the AFR were different by almost a point between the two runs at 6K RPM.
10-31-2011, 09:17 AM
#7
Race Car
No, E85 is closer to 9:1. Also, you don't target stoich with gasoline, you target 12-13:1, depending on application (I'd target 13.0:1 for an NA application, 12.0:1 for a boosted application). E85 does not require as much enrichment for LBT, going off of memory.
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10-31-2011, 09:21 AM
#8
Nordschleife Master
But most people still run the wideband in gasoline mode, in which you can tune E85 using the same AFRs as for gasoline. ~14-15 for idle and light cruise and 11.5-12 at WOT.
10-31-2011, 11:30 AM
#10
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Graphs are both after M-Tune. 16lbs. is on 91 octane and 22lbs. is on E85. Engine is built with Wossner pistons and rods,piston squirters,windage block,baffled pan,60-1 hi/fi turbo and 3" Borla exhaust.
Before the M-Tune my Lindsey 340 rwhp kit made 326 rwhp @ 18lbs. on 95 octane.
On the track oil temps were 210-220 at the end of a session instead of 250-260.
Before the M-Tune my Lindsey 340 rwhp kit made 326 rwhp @ 18lbs. on 95 octane.
On the track oil temps were 210-220 at the end of a session instead of 250-260.
10-31-2011, 11:34 AM
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Graphs are both after M-Tune. 16lbs. is on 91 octane and 22lbs. is on E85. Engine is built with Wossner pistons and rods,piston squirters,windage block,baffled pan,60-1 hi/fi turbo and 3" Borla exhaust.
Before the M-Tune my Lindsey 340 rwhp kit made 326 rwhp @ 18lbs. on 95 octane.
On the track oil temps were 210-220 at the end of a session instead of 250-260.
Before the M-Tune my Lindsey 340 rwhp kit made 326 rwhp @ 18lbs. on 95 octane.
On the track oil temps were 210-220 at the end of a session instead of 250-260.
I still miss my old NSX. She was such a good Girl. Proper and polite when she needed to be, and was just Nasty when I pushed her hard. Good, good girl.
And that Hi Fi turbo is right about maxxed out. Mine was fairly laggy. Relatively speaking.
