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 4625 Posts Member #: 20 My sister is so fit I won't show anyone her picture Lake District |
28th Apr, 2024 at 02:11:59pm
Very nice indeed!
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256 Posts Member #: 11017 Senior Member Shropshire |
28th Apr, 2024 at 06:07:34pm
On 28th Apr, 2024 stevieturbo said:
Very tidy car, a credit to you. How does the injection system get around the "charge robbing" that is a known problem ? And this boost pipe looks really close to the hot side ? https://i.imgur.com/ys1G0ZI.jpg Like most with a wet manifold design, you don't. It's still present, but target lambda is richer than usual on boost. The pipe is, but its now wrapped. Inlet air temps are still in the 30s though. |
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256 Posts Member #: 11017 Senior Member Shropshire |
23rd May, 2024 at 11:17:46am
Whilst mapping for 16psi, i came across an issue where by the lambda readings started to lean out a little above 5500rpm. This is where logging comes into its own! The picture below shows 4 traces - Top is the manifold pressure, middle has predicted fuel pressure (sand colour) and actual fuel pressure (light pink), and the bottom has the injector duty. What's missing is rpm. However, what it is showing is that the fuel system cannot keep up with the expected/demand, and the injectors are running at 100% duty, but demanding 120% (not actually possible). At first glance, i thought that was me out of injector, but what it actually tells you is i'm out of fuel pump!
Edited by Steve220 on 23rd May, 2024. |
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Site Admin  9403 Posts Member #: 58 455bhp per ton 12 sec 1/4 mile road legal mini Sunny Bridgend, South Wales |
8th Aug, 2024 at 12:44:24pm
Looks great, what pedal position sensor are you using? Team www.sheepspeed.com Racing
On 15th May, 2009 TurboDave said:
I think the welsh one has it right! 1st to provide running proof of turbo twinkie in a car and first to run a 1/4 in one!! Is your data backed up?? directbackup.net one extra month free for all Turbo minis members, PM me for detials |
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256 Posts Member #: 11017 Senior Member Shropshire |
9th Aug, 2024 at 08:20:10am
On 8th Aug, 2024 Jimster said:
Looks great, what pedal position sensor are you using? Hi Jimster, thanks chap, using a Honda sensor from a CRV. It's linked to the oem pedal. Replacing it for a Classic Mini DIY custom pedal soon as I don't have enough spring pressure and the current one trips out from time to time. |
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Site Admin 9403 Posts Member #: 58 455bhp per ton 12 sec 1/4 mile road legal mini Sunny Bridgend, South Wales |
11th Aug, 2024 at 10:38:06am
That’s the problem I have , I made my own pedal box (never again took about 40 hours) and I use a twin track potentiometer for the pedal position and it’s too soft and feels crap Team www.sheepspeed.com Racing
On 15th May, 2009 TurboDave said:
I think the welsh one has it right! 1st to provide running proof of turbo twinkie in a car and first to run a 1/4 in one!! Is your data backed up?? directbackup.net one extra month free for all Turbo minis members, PM me for detials |
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256 Posts Member #: 11017 Senior Member Shropshire |
12th Aug, 2024 at 03:04:19pm
Just swapped to a custom built unit. Hopefully this one won't trip out!
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3588 Posts Member #: 655 Post Whore Northern Ireland |
24th Aug, 2024 at 05:53:54pm
I used a Subaru pedal for my car ( not Mini ), pedal feels fine in it.
9.85 @ 145mph
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3588 Posts Member #: 655 Post Whore Northern Ireland |
24th Aug, 2024 at 05:57:41pm
On 23rd May, 2024 Steve220 said:
Whilst mapping for 16psi, i came across an issue where by the lambda readings started to lean out a little above 5500rpm. This is where logging comes into its own! The picture below shows 4 traces - Top is the manifold pressure, middle has predicted fuel pressure (sand colour) and actual fuel pressure (light pink), and the bottom has the injector duty. What's missing is rpm. However, what it is showing is that the fuel system cannot keep up with the expected/demand, and the injectors are running at 100% duty, but demanding 120% (not actually possible). At first glance, i thought that was me out of injector, but what it actually tells you is i'm out of fuel pump! Always run safety trips for lean mixtures ( and low fuel pressure/relative fuel pressure ) where possible. And likewise, run a multiplier based on relative fuel pressure so if fuel pressure drops it will automatically increase injector pulsewidth. This is far faster and safer than trying to rely on closed loop fuel corrections, which can only adjust when it sees a lean event 9.85 @ 145mph
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256 Posts Member #: 11017 Senior Member Shropshire |
26th Aug, 2024 at 07:24:29am
On 24th Aug, 2024 stevieturbo said:
I used a Subaru pedal for my car ( not Mini ), pedal feels fine in it. It's fairly easy to bolt to a flat bulkhead, and then just modify the pedal side a bit. And what do you mean it trips out Steve ? It kept throwing up errors due to the mismatch in voltages between APP 1 and 2. The new pedal seems to have sorted it now. In terms of the fuel pressure, I have a condition that if actual and predicted are out by 20kpa or more, it sets the boost solenoid duty to 0%, which is around 6 psi on actuator. |
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256 Posts Member #: 11017 Senior Member Shropshire |
20th Sep, 2024 at 08:26:31am
Finally dialled in rolling anti-lag. Great fun! Over 4k, push the brake test switch on the dash and it holds the rpm where you have it, give the car full throttle and will boost to 14psi, let go of the switch and the car shoots off! Also spits flames.. because i'm a child.
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