playing around with Octane levels on a stock KA

[Ricks15]

If you have a completly stock KA and if you start mixing certain octane levels will you currupt you're cars computer??? For example if you feed it 87octane gas for work and then by the end of the week youre going to go to screw around at the canyons or at the drag strip you put in 91 octane for those hi performace driving, then when you're going to put back the cheap 87 gas will you get any problems while doing this switching fo gas octane levels???? Because thats what I have been doing and my car has alot of problems when I drive it.