Ditch that power robbing piece of s--t!!! I run my 86 with nitrous, stock turbo and mods in my sig with no problems.

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87 300SDL 300,000mi stock with some exceptions, no alda, blocked egr, factory airbox and flapper replaced with aem filter, nitrous oxide injection , biodiesel fueled, 0-60 in 8.1sec. 1/4 mi 14.4sec.