anyone change spark plugs to aftermarket? like denso, any HP increase?

 

Autolite HT0

Not sure on HP increase but you need them for FI/Nitrous

 

+1 HT0

 

+2 on HT0 tried some Brisk once. It was about a $350.00 mistake when it was all over.

 

went to brisk,no problems,runs good

 

I went to brisk and they lasted 2 hours!!![:@]

I called brisk and it turns out that they are NOT the same heat range as the HT0's. They are the same heat range as the stockers or HT1's!

Bottom line - if you're not running a lot of boost, the brisk or stock plugs will work fine. If you are running boost, then the only plug available for the heat range you need is the HT0's...period.

FYI - the ford racing plugs with the colder heat range are the autolite HTO's in a more expensive wrapper.

 

You got two hours? Nice I got two runs before one went on me and dead holed my engine.[:@] Got some wonderful pictures of it also!

 

Thank god it didn't go that far. I put them in at my house and drove to the track - made one pass and felt the car missing on the big end. Pulled the plugs and they were fried. If I had tried one more pass before pulling them it could have been a bad day![:@]

 

Yah I sprayed twice. After the second trip it was missing bad. I could feel it dead wholing. Pulled the plugs the anode was completely gone from one. Scoped the cylinder and found nothing. Brisk's explanation "It evaporated". I called BS the plug is 95% silver and 5% chromium alloy. No way it evaporated!

Learned my lesson!

 

Nope. I had to talk to 4 different people at Brisk before I finally found out they are not a colder heat range than stock and bad news for FI...[:@]