grndprixss

i have a massive problem, i got a mail order chip and once i hot 3000rpm on a load it pings like crazy , it really pisses me off that i have a really nice motor built and i cant go past 3000 without it pinging like a car service car, please help!!

robsgta

Did it ping before you put the chip in ??? Keep your foot out of it until you correct the problem...Unless you want to destroy your new motor. damage pistons,. blow head gaskets etc etc..

grndprixss

it didnt ping before the chip

robsgta

Send the chip back...get your money back if you can.. try the search feature on the top of the page and type in burn your own chip or prom you can do them your self for about the same cost.

grndprixss

i plan to burn my own chips in the future, if 48 degrees total timeing too high for a 10.4 to 1 compression motor?

robsgta

where did you get 48 degrees total from.. most stock tpi's advance from 22 to 24 degrees with 6 being the base..
So a low 30's should put you were you need to be..

1989GTATransAm

iTrader: (3)

I agree with the above post. 48 degrees is way to much. Like was said maybe something around 30 degrees total depending on your combination. Allen

grndprixss

on my snapon scan tool i have the graphing function, when i start to ping the advance hits 40 degrees plus my 8 degrees basetiming, the guy who did my chip said it was what the factory put but i couldnt believe it

robsgta

Factory base timing is 6 degree's..
You might want to bring your base timng down until it effects your idle and see if it helps any.
Or send your guy your chip back to reburn it.

razor

Sounds like ARAP timing tables. I run roughly 25 degrees total timing on the same compression with stock iron heads (19 degrees in the tables from 2400rpm up plus 6 degrees base timing with all SA set at zero) Put the stock chip back in or don't use the car. Your ECM can probably only retard 15 degrees maximum which still puts timing at 33 degrees and now the ECM can't reduce it anymore. If you can hear audible pinging thats not good.

Regardless you need a proper chip burned. I would not let the same guy that did the first one do this next one either

On a sidenote what heads are you running and which plugs( heatrange) do you run?

grndprixss

im running the gm bowtie phase 3 steel heads with a r43ts heavy duty ac spark plug, msd 6am with the blaster 2 coil

327_TPI_77_Maro

iTrader: (8)

Wow thats a lot of timing, I end up with 34 total in by 2500, 36 total in by 3500 on my current chip (this includes the 6 btdc base timing). I wouldn't want any more than this

Morley

That much advance with iron heads is a disaster waiting to happen.

robsgta

grndprixxss There are two things that can kill a nice motor one is over heating the engine wich will probably still make the car driveable and detonation (pinging) wich will blow head gaskets if your lucky, also burn valves,burn holes in pistons or break the tops or skirts off of them all of wich will tear your motor apart and make it junk