
Originally Posted by
Batmobile_Engage
I'm more of a GD chassis guy, but that doesn't sound unreasonable on E30. However, I would assume you might need some exhaust mods, such as a downpipe, to achieve it. Now for the winter tune on 91. I would be more hesitant to push my luck with a 91 octane tune in the winter (or any winter tune for that matter). Overboosting is waaaaaaaay more common in the winter and if your tune is riding the line, for the sake of power, a very cold day and a heavy right foot could mean the end of your engine.
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