ws6102488

iTrader: (1)

I just got my d1 setup and front mount on my car my car has 408 dart heads etc. Car put down a little over 700. Drove fine whenn i went a picked it up and drove it around all day in raleigh where the shop was that does all my work. As soon as i get home it starts ******* up spark plugs by dentonation. Ive changed like four set of plugs since last night. The car has had tr8's, and br7ef's, now i think it has autolite 103's do i need to put race gas mix or is something wrong with tune. I think just adding race mix will stop the detnation. Thanks for any inputs guys.

deadmanTA

iTrader: (7)

May be the tune. Too much timimg. D you have a wideband, what afr are you seeing?

ws6102488

iTrader: (1)

I have a gauge order it was seeing bout 11.5 on dyno

ws6102488

iTrader: (1)

anyone have any advice

HUNTER02SS

iTrader: (24)

Well the load on the dyno will be different than on the street! 11.5 on the dyno could be a 12.5 on the street. I would also say to much timing or maybe even bad gas??

deadmanTA

iTrader: (7)

I would try a new tank of gas first to just see if it works. You also should consider picking a good wideband. It never hurts to keep an eye on things. If the gas and the afr's are good then I would take it back to the tuner and let then check it out.

ws6102488

iTrader: (1)

I went and filled it up with 100 today and it seems to be better i havent when wot but about half way and it seems to be ok

deadmanTA

iTrader: (7)

Hopeful it was just a bad tank of gas. I have had truckers tell me that if the get to a station and they have too much of 1 octane that they'll have them put it in another tank (mixing the gas/octanes).

firehawk618

iTrader: (14)

Are you running a boost gauge? If so what PSI are you making 700hp?

Thanks.

ws6102488

iTrader: (1)

im making 14psi maken 726

firehawk618

iTrader: (14)

Very nice.

What size pulley?

thanks

DeltaT

iTrader: (5)

If the race gas solves it, and it comes back again when you fill it up with pump, then it sounds like too much timing. I'd probably pull like 6 degrees, drive it a while in different conditions to get a feel for it, then start adding it back a degree at a time. Any detonation bad enough to mess up 4 sets of plugs is bad ****. Can you actually hear it pinging?

May be time for a meth setup.

Jim

ws6102488

iTrader: (1)

Meth is goin on next week and probaly a timing tuner also.

ws6102488

iTrader: (1)

Could it be a bad injector on that cylinder?

gametech

iTrader: (1)

The Diamond Shamrock stations in San Antonio had a batch of kerosene or diesel (I don't remember which) in their premium tanks a couple of years ago. The resulting lawsuits made the news. Hopefully he just got a bad tank of gas.