JMSMotorsport
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Posts posted by JMSMotorsport
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Am I right in thinking if it's hitting engine limiting before the change happens, I just need to bring the shift on earlier even thou its already commanding the shift at 5040rpm it hits the limter at 6060rpm. ? Mainly the 1-2 if i use it in Manual it shifts fine under WOT.
The Log Has Multiple Pulls - From Dead Stop to Rolling and a Manual Pull
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can someone post the actual xcel file, HP tuners forum has locked me out and the reset password feature doesn't work.
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Check the voltage at the pump also. Turning up the commanded alternator voltage gave me much better voltage with the pump running.
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4 minutes ago, Puffwagon said:
So it's working now?
Sure is. This is when I had it set at 3bar so switched back to 4bar and stayed happy. Before this it was still dropping around 6psi on 3 bar base
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Sure have has to adjust high slope to pull some fuel back out.
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Well it turned out that the pump didn’t fit into the module properly and needed to trim it up for the taper at base of pump. Was jammed hard against the bottom of the Bucket.
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Done some more testing this morning, Run even bigger cable to relay - found some voltage drop even between relay and pump due to cable size. Bumped my alternator voltage up so I’m now getting a solid 13.7v at the pump. Made little difference - lowered base pressure to 3bar - the high and low slope numbers were out by around 5-10% even after lowering via the same percentage and amount use be the ID calculator - still getting pressure drop. I’m leaning towards an actual pickup issue at the pump.
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30 minutes ago, Puffwagon said:
I have used the Ryco filters but I swapped to a washable stainless filter from Goleby's.
When the pump is running out but the injectors have room, you can add fuel to the speed density table. If it starts going lean at 5000rpm, get in there and drop the cells it runs through at WOT by 500 to 1000 numbers from 5000rpm and up and it'll richen up.
I haven't tried dropping the base pressure but it should be as simple as changing the slopes and breakpoint to suit.
Yeah the only issue I thought that doing the speed density on flex when it goes back to 98 will be pig rich.
I've used the ID spread sheet to find the difference between on 43.5psi and 58psi on there slopes and taken this amount from my current slopes. Hopefully this gives me a good starting point on the slopes. Might work out the percentage change also and try these numbers.
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Iva had a thought. Injectors should be good for it but in the software can I reduce the expected base fuel pressure to be at 3 bar then would the slopes just be a matter of reducing them by the pressure percentage difference or would it not be that simple?
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15 hours ago, Puffwagon said:
Haha yep the list is never ending!
What fuel filter do you use? Just the basic Ryco
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Thanks for all your insight. Customer will have to make do with what we can get from this setup and move onto a bugger fuel system and well the auto will need upgrading anyways.
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I have another bit of hose coming anyway so will try it.
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Nope pipe checked And triple checked, tank is brimming. KPM say there good for 700hp I’m guessing this is Engine and well I’m nearing that.
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26 minutes ago, Roland@pcmtec said:
High pressure at idle is typical of the return flow being restricted. Normally you'd modify the return flow path for a 525 (we had to on our BF test car with the 525). To save yourself time KPM and many others sell full kits, eg wiring, modified swirl pot, everything is bench tested and warrantied for continuous E85 usage. Highly recommend just purchasing a kit like that purely on the time you save as you know it will hold flat pressure at idle/wot for your given power level.
Also there is a function to hold the E content at last value above a given TMAP pressure. It is set out of range by default, I recommend setting it to approximately 1.2 load (work out what this in inHG) so that the E content locks during a WOT run. This will also save the engine if you have the sensor in the return line and what you are describing happened after the vehicle has left the shop.
This will be my go to next time.
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Yep just seems odd. I just had pump apart again and fiddled around with socks and put it back in and it’s actually worse that’s what’s leading me that way.
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50 minutes ago, Puffwagon said:
There isn't a split in the reg reference line? A single 525 with a relay feed should be fine at that power and boost level.
It’s got me fucked. Just changed reference line no change, the bucket came with its own filter sock that I’m using as the one supplied with pump doesn’t fit as it hits the bottom of the basket. I forget when I pulled factory one out does the pump sock sit hard against the bucket base? Could it be that there’s no room for it to pull fuel in? I thought those socks were designed to allow fuel to get pulled in everywhere
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It’s dropping. Strange considering the pump and setup should be fine. New Filter and New Pump
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Would the 1 525 be sufficient for that power level? I’ve got a sensor in now not just gauge so can watch in car while on dyno. See what goes on
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At idle vac line off I can set it at base 58psi and it’s steady and then fitting vac line pulls it down as should. So that wouldn’t cause a low pressure situation more so an unstable high pressure at idle.
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1 hour ago, Puffwagon said:
Stock feed line is fine.
Cheers. Thought would have been fine. Now will the return Venturi in the bucket cause pressure issues? I’m going to get a fuel pressure sensor sorted so I can log it.
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I adjusted the sensor based on the numbers in the how to guide. The supplied ones were out just. But there is certainly a fuel supply issue. Even now on the feed side the content drops from 73 to 65
Time to keep digging- 525 Walbro in a Sniper 1L Bucket, Upgraded wiring to a relay at the pump all feed side is -6 Teflon braid. What’s the consensus is that big enough lines? To make 450rwkw on E85
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It appears the ECU log shows a 10% difference in the E content
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Ah this could be my issue. I will add Ethanol to the log. I’m actually not sure why I put it in return knowing they should be in supply. That’s an over site. Thanks.
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ZF Shift Patterns
in Transmission Tuning (AUS)
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So set Fuel Cut limit auF0133 to 6100 and Move the RPM Limit auF0144 to 6250? I will also try using that process as that makes sense, I guess they make the RPM so much quicker needs extra time to get that shift done.