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This is the last in a series of 5 posts about “ Fuel Injection Build and Mapping”, and details a Rolling Road test Before we get to the Rolling Road test, it may be helpful to outline the engine Spec's: The Induction, Cylinder Head and Exhaust are: 4 x 36mm throttle bodies into 400mm long x 27 mm di...

This post is part of a series about building a Fuel Injection system for a Hillman Imp engine in a Mk 5 Davrian, previous posts were: Inlet manifold length vs Torque and power: https://davrian.net/forum/viewtopic.php?t=716 Fuel Injection Build: https://davrian.net/forum/viewtopic.php?t=1026 Determin...

This post follows 3 previous, Inlet manifold length vs Torque and power, Fuel Injection Build, Determining actual WOT of TB's and its application, These notes are for optimising the fuel map of Programmable Fuel Injection “on the road”. Although a Megasquirt ECU is used, they are applicable to most ...

Hi Davrianites, A spin off of MattnRach question about damping the MAP sensor, has been the facility to determine Actual Wide Open Throttle (WOT) at various RPM. If you think of an engine as a simple air pump, then “Actual WOT” is the throttle opening at which the cylinders are full of air at atmosp...

Hi Dave, Thanks for your suggestion of running sequential injection. ATM it's running batch injection and 2 squirts/rev to reduce pulsing in the fuel rail. The engine idles reliably at 800 revs, probably due to: A. the good mixture control of F.I. B. No “Cross Fuelling” of neighbouring cylinders wit...

Hi MattnRach, A damper was fitted to the Manifold Air Pressure (MAP) sensor line after your question. The sensor line was T'ed into the Vacuum line from the Throttle bodies (TB's) to Fuel Rail Pressure regulating valve but, as you found, the pressure spikes were huge. An in-line plastic Fuel filter ...

Hi Dave Nice to hear from you, I enjoy reading your posts on how you are developing your lower NVH Davrian To deal with your questions: The ECU mounted MAP sensor can be connected to the Vacuum line between the ITB's and fuel rail Pressure Relief Valve, the blue pipe to the left of the ITB's in the ...

Hi Dave, I'll be at Castle Combe, it'll be interesting to compare notes on fuel injection. Would you mind bringing your maps so I can have a look at them, I'll have my latest maps with me. Hi Mark, Thanks for the flowers and I look forward to seeing your Davian with the BMW K engine. Cheers both, se...

Fuel Injecting a 1040cc Imp Engine After a Rolling Road session it was clear that the 2 x 1 1/2” Stroms had very poor mixture control and were restricting peak power. A manifold with four independent runners and Throttle Bodies would have better mixture control, increase power and improve economy. T...

Hi Davrianites, I had Decals made up to celebrate 50 years of the worlds finest sports car.........Yep, you guessed... Davrian. Davrian50 V5.png And on the car DSC_0873.JPG I ordered them from www.stickersinternational.co.uk, and are printed on a 200mm circle of transparent vinyl and cost about £3 e...