MS2 Basic, Dropped revs and lean spike when throttle from idle. - Miata Turbo Forum - Boost cars, acquire cats.

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Old 09-11-2014, 11:28 AM   #1
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Default MS2 Basic, Dropped revs and lean spike when throttle from idle.

Hello guys and gals,

I've been on MX5NUTZ and been given some pointers on there which have helped a certain amount. I have a MS2 basic, 440cc injectors, GT28r turbocharger, 1.6 SNC 1990 engine and intercooler, running standard coilpack and high heat plugs.

I have cured a cold start problem by increasing the fuel being added but still have the above issue.

When the car is started for the first time the idle is steady at about 1k rpm but any movement of the throttle pedal induces a massive lean spike followed by a drop in revs and then rich spike and a raise of revs. this is annoying when trying to pull away with a ceramic clutch!

Any help will be gratefully appreciated, i am fairly new to this but have managed to struggle through everything else but this has me stumped.

If any kind souls have time to take a look at my .Msq file and show me where i went wrong it would be appreciated!

http://www.filedropper.com/mx5-idle-adjustment_2

Many thanks,

Dean
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