Weird I would see about 367 G/s when I was around 8psi.
Not sure what my new setup will flow but I am hoping to beat that. |
Originally Posted by shadycrew31
(Post 4457112)
Weird I would see about 367 G/s when I was around 8psi.
Not sure what my new setup will flow but I am hoping to beat that. |
Originally Posted by kma5783
(Post 4457113)
In what gear?
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Originally Posted by kma5783
(Post 4457105)
On that log I was pretty consistent at 6psi, dropped off to 5psi toward the very end.
.
Originally Posted by kma5783
(Post 4457105)
Don't know why, but it seems like we get caught up on G/S numbers too much on this forum. . |
Originally Posted by shadycrew31
(Post 4457112)
Weird I would see about 367 G/s when I was around 8psi.
Not sure what my new setup will flow but I am hoping to beat that. somewhere around 13-14psi at peak rpm |
Originally Posted by Brettus
(Post 4457116)
That sounds a bit too high . Better to try get it as close to reality as possible IMO . Makes for a better tune and you don't run run out of max calc load till you are up close to the 400whp mark.
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Originally Posted by Brettus
(Post 4457116)
That sounds a bit too high . Better to try get it as close to reality as possible IMO . Makes for a better tune and you don't run run out of max calc load till you are up close to the 400whp mark.
somewhere around 12-13psi at peak rpm General rule of thumb is MFR(Mass Flow Rate)(Converted to lbs/min) x 10 The Actual Calculation is (MFR)(60)/(AFR)(BSFC(Brake Specific Fuel Consumption)) So... 270 G/S converted to 35.714lbs/min 35.714 x 10= 357.14bhp |
That's definitely too high Shady...
367 G/S = 48.545lbs/min 485.45bhp? I don't think so! LOL |
Originally Posted by kma5783
(Post 4457131)
Yes you can calculate estimated horsepower based on Air Flow...
General rule of thumb is MFR(Mass Flow Rate)(Converted to lbs/min) x 10 The Actual Calculation is (MFR)(60)/(AFR)(BSFC(Brake Specific Fuel Consumption)) So... 270 G/S converted to 35.714lbs/min 35.714 x 10= 357.14bhp |
Originally Posted by Brettus
(Post 4457141)
That might be the calc for a piston engine . 270 g/s on a renesis works out around 270bhp or 230whp
Either way doesn't really matter to me, I'm not chasing numbers. I like the way the car feels now, at 8-10psi I'll be more than happy. Just going to put it on a dyno for the hell of it. |
Originally Posted by kma5783
(Post 4457105)
My MAF Scale is good, that's the first thing we did...
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1 Attachment(s)
Heres my datalog, it got messed up after I saved it. This was on the previous tune :/.
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Originally Posted by kma5783
(Post 4457146)
, I'm not chasing numbers.
t. |
Originally Posted by shadycrew31
(Post 4457169)
Heres my datalog, it got messed up after I saved it. This was on the previous tune :/.
Originally Posted by Brettus
(Post 4457172)
That's what they all say :p:
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Originally Posted by kma5783
(Post 4457190)
Why no Calc Load, G/S, or Throttle?
LOL :yelrotflm |
Originally Posted by shadycrew31
(Post 4457200)
Its on page 3!
Also question for you guys, even when in Open Loop, what would cause the ECU to still show an LTFT? STFT is -0.16 which should indicate OL. |
Originally Posted by kma5783
(Post 4457213)
:doh: Who the hell saves a log as a PDF anyway.
Also question for you guys, even when in Open Loop, what would cause the ECU to still show an LTFT? STFT is -0.16 which should indicate OL. |
Originally Posted by kma5783
(Post 4457213)
:doh: Who the hell saves a log as a PDF anyway.
Also question for you guys, even when in Open Loop, what would cause the ECU to still show an LTFT? STFT is -0.16 which should indicate OL. |
Originally Posted by Brettus
(Post 4457222)
That's how the ecu works and is why you maf calibration at cruise is so important .
So if a LTFT is showing in Open Loop, that's fine? |
Originally Posted by shadycrew31
(Post 4457225)
I couldnt put it on the forums as a CSV file or XLS :(.
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Originally Posted by kma5783
(Post 4457227)
My fuel trims at cruise are good.
So if a LTFT is showing in Open Loop, that's fine? |
I've never seen an Open Loop log with a LTFT, STFT and LTFT have always both gone to -0.16, so it was weirding me out.
If others have seen it, it will make me feel better. |
Originally Posted by Kane
(Post 4457235)
I've never seen an Open Loop log with a LTFT, STFT and LTFT have always both gone to -0.16, so it was weirding me out.
If others have seen it, it will make me feel better. I thought that was totally normal . To get zero LTFT your maf calibration has to be perfect. Maybe you are too perfect ? LOL |
Originally Posted by Brettus
(Post 4457230)
you calibrate the maf to minimise your OL LTFT . Anything up to +- 3 is acceptable though.
Originally Posted by Kane
(Post 4457235)
I've never seen an Open Loop log with a LTFT, STFT and LTFT have always both gone to -0.16, so it was weirding me out.
If others have seen it, it will make me feel better. |
Maybe I'm too anal retentive....
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