IMHO if you remap your ignition again to 15 degrees base timing with 32 total (I am assuming 1275 engine and 98) I feel you will gain more driveability than any air filter change .... just to change tack a bit cheers Lindsay Siebler

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1959 Austin A40 Farina fun car
1965 Mk1 Cooper S restored
1970 Colt 1100F SS restored
2014 Mitsubishi Imiev fully electric daily driver
1948 Allard M coupe Olds 215 v8 project
1971 Twin cam Escort ex Uk championship winning rally car project

All ready done - and you are right the improvement in performance was outstanding. Admittedly there were two problems with the distributor before the work namely ill fitting rotor button and counterweight springs which were well beyond their use by date.

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John Sneddon
0408 431 807
1963 Morris Cooper
1965 Morris 850
1968 Morris Cooper S

I enjoy the info in his articles but get so sick of the snarky "everyone is a jerk except me" attitude. Maybe it's just me.

I should say, having read that article, my post above is for a suck-through supercharged setup. So Calver's comments about pulses from the a series induction will not apply to me. Ie you may need to dismiss my experience as it may not apply to you if yourself running NA.

Sent from my Pixel 3 XL using Tapatalk

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Build thread for Supercharged 1275 1967 Deluxe Resto
Build thread for Mini ute conversion 998cc Turbo

Thats perfect, congrats for u and your machine