legal-z

i have a stock 94 running non-seq. with a hd boost controller set at 10-11psi. after a redline run in second and full throttle accel. in third, the car stumbles at about 6200 rpm and then picks right back up. any hints? i'm wondering if it's a fuel supply problem. i have not changed the filter, however, it was changed by mazda about 12k ago when a reman motor and turbos were put in. any help is greatly appreciated. i plan on doing the filter next weekend and possible upgrading the fuel pump just to be safe.
andy

Mahjik

iTrader: (1)

When was the last time you changed your plugs and checked your plug wires?

legal-z

plugsw have less than 2k on them. haven't changed the plug wires but ill do it asap. any recommendations on a brand? i've used ngk wires in the past and liked them. at least if that's the problem, i'm less worried about damage due to a lack of fuel.
andy

Mahjik

iTrader: (1)

Well, if it's just a little hesitation, it could be the plug wires. Ignition break-up in the upper rpms seems to be common as people mod their cars.

I'm using the 10mm Magnacor wires. Some people have had difficulty with them. They can be a pain to get the boots snapped on, but once they are on, I've never had one pop off.