badmfkr

iTrader: (4)

from what I understand there are 3 in gear setting for timing.

1.timing at idel. believe mines set at 17 degrees
2.timing at part throttlle.believe mines set at 20 degrees
3.timing at wide open throttle.believe mines set at 23degrees.

?I have a pinging noise at high RPM just before the A4 shifts.
if I get a retune what would be a good setting for timing at wide open throttle for a mild cammed car?

I did a search and read the stickie.

I can record this pinging noise w/ my computer but don't know where or how to post a non video.

Thanks for any helpfull surport

jimmyblue

iTrader: (11)

I think I'd start with checking fuel delivery, pressure at WOT on
my stock plumbing / wiring drops to 52PSI WOT from 58PSI low
pedal. That's something like a 6% deliivery model error (or maybe
-0.8ish AFR from commanded). Got a hotwire kit to install and
if that doesn't work I'll be plumbing for a manifold referenced
regulator and return-from-rail. Fixing it up is better than trying
to tune around it. Also check that you're not running up against
injector duty limits at max RPM*MAP.

badmfkr

iTrader: (4)

jimmyblue are you saying the stock wireing to fuel pump is inaddaquite and at high RPMs the fuel pump is not receiving enought voltage thus reduceing preasure?

do you have a fuel preasure guage inside the car?


thanks

jimmyblue

iTrader: (11)

I've been told the wiring is weak, so I got the kit to reduce the
voltage drop. Just haven't gotten to installing it.

I added an Autometer sender to my aftermarket Actron fuel
pressure gauge, a cig lighter power feed and a remote gauge
head, so I can read it from the driver's seat.

badmfkr

iTrader: (4)

I'd like to connect a fuel preasure guage up to the shrader valve an observe the preasure at normal cruiseing and at WOT how could I route the tube so I could oserve it?

or would I have to get an actualle fuel preasure guage and mount it inside the car?

I'm assumming you're using the racetronics hotwire kit?

Thanks

jimmyblue

iTrader: (11)

I'd be hesitant to run pressurized fuel into the cabin, you'd
need a high quality (probably braided) hose. I elected to
cobble it up electrically, that's my thing. The Actron gauge
(AutoZone cheapo) screws into the Schrader, I took the hose
off it and added a 1/8 NPT T-block for the sender.

badmfkr

iTrader: (4)

I was'nt planning on having fuel test guage inside the car maybe taped to the hood just a tempuary guage.

I haven't looked at how much clearance there is on the weather stripe behind hood. maybe it won't sqwees the tube.

sum guy

iTrader: (4)

I've taped my matco to many windshields, just go between hood and rear wheatherstripping.

badmfkr

iTrader: (4)

Jimmy doe's you're car ping also?

can you please post an image of you're fuel preasure guage setup and if possiable provide part #s.

for right now I have tapped a small peice of wood under my throttle pedal preventing WOT and the associated ping.

Thanks

Patrick G

iTrader: (14)

You may be getting oil from your PCV system into the intake manifold. That will make your motor ping its *** off. Get a catch can and see if the problem goes away. I've seen it cure pinging for many F-Bodies.

badmfkr

iTrader: (4)

three years ago when I removed my stock LS1 intake manifold for the FAST manifold I was shocked at the amount of sludg blow by inside the LS1 manifold did'nt want to crape up my new FAST so I've had the home depot catch can & a fuel fliter on second tube connected to manifold (attached image) on for around three years apparently it's catching blow by however I haven't looked inside this new manifold.

I've allways used a fram oil fliter recently have read here that changing to a AC will cure the ping.

what are you're thoughts on the GM fuel pump wireing being inadaquite

we all know about the inadaquite wireing to the pass. side electric windows.

Thanks

Patrick G

iTrader: (14)

Those in-line fuel filters have never worked for me. A proper catch can with an internal separator always caught lots of oil mist for me.

badmfkr

iTrader: (4)

home depot cc is circled

I've allways used a fram oil fliter recently have read here that changing to a AC will cure the ping.

what are you're thoughts on the GM fuel pump wireing being inadaquite

we all know about the inadaquite wireing to the pass. side electric windows.

Thanks

Patrick G

iTrader: (14)

I think that the stock GM wiring if fine for the stock GM pump, not for a Walbro or better. Those Home Depot type of catch cans don't have the internal oil separators that are what actually do most of the work. If your's has it, it's a big improvement over the old ones. If it doesn't, spend the bucks and get a Billet Technology CC or something like it.

badmfkr

iTrader: (4)

I recently installed a good Mike Norris catch can and it cured the pinging at WOT.

Installed the MNCC last night today did 5 WOT runs and dam I feel good!

I was planning on buying HP tuners,wide band w/ 5 sensors innovate ss14 and monitor MAS,fuel preasure,TPS,MAP ect.
what a relief I avoided all that. away I may just get the innovate LC1 any thoughts.

I thought my little Home depot was doing what I wanted it to do catch oil blow by and it did car still pinged though.

the home depot is attached as a secondary just to see how good the MNCC is working.



I also found out from the tuner my WOT timing is 28 degrees.



Mr.G you are the man thanks so much for you're expert advice.

thanks to all the others w/ there expert advice too.

Hope this helps others w/ same pinging problem

Patrick G

iTrader: (14)

Glad it worked out for you and saved you some dough.