Adding spray on a little 95 GTS...

The timing does not reduce as far as say from 2,000-6,000 rpm it does have a realy slow adv. rate (that is good for bottle perf.) though. The total timing is preaty weak at around 26* total at WOT. With a 100shot and the base 10* timing you "should" be ok.

I say "should", if there is no ping at 14* base (10 is stock) then you will be fine with a 1range colder plug just to be safe.

If you ask me though...before I had the tweecer I ran a msd digital6+ it has a timing retard "switch" that when hooked up to a 12v source like the n2o arming switch it will pull timing out, you set how much. This way you can run 14* base timing when off the bottle and then the 9-10* for a 100-125shot when the bottle is on. Plus its an msd ign. box and that is going to aid the bottle anyway as the need for a stronger ign. is always better off with than without.

i ran a 150 wetshot with no tuning at all.

I had 8* base timing, stock replacement autolites @ .035, and an msd 6al

You most likely are talking about the tip in retard.

It happens when you are at a close to closed throttle position and then go wot.

You'll see a value of 5 for only about 1/2 to 2/3 of a sec.

Grady