Tuning my 3400/3500

[johnnymossville]

Thanks Eric, excellent info.

[Superdave]

I used 4 of the original studs from the old manifolds, 2 on each side for alignment.. the other 8 i used regular metric oil pan bolts. I've never had a problem with them backing out.

It's a bit of a pain to get the 10 and 13mm wrench on the back ones but i've done it several times now so it's not impossible..

[johnnymossville]

Thanks Dave. I was wondering if you might have had a chance to look at a couple of the recent datalogs that I posted and how you think my tune is at this time? Still has some random knock and more of it.lol

[IsaacHayes]

Get the new style sway bar that goes under the exhaust... Not having a front sway bar would suck! I doubt it's 30lbs. Doesnt feel like it.

[Superdave]

Thanks Dave. I was wondering if you might have had a chance to look at a couple of the recent datalogs that I posted and how you think my tune is at this time? Still has some random knock and more of it.lol

I'll take a look asap...

[johnnymossville]

Here are my two latest logs. Dlog six is cold start and highway cruise. Dlog seven is a short 40-45 mph cruise and an eleven second blast from zero to eighty mph beginning around sample # 970. It looks like it might a little lean at WOT still. What do you think?

[Superdave]

you deffenetly need more WOT fuel from 1k RPM to 4800 RPM, 90-100 Kpa. it's running around 800 mV which is about a 13-13.5 AFR. 4800-6400, 90-100 Kpa could use a tad more fuel as well. Typically you look for around 950Mv at WOT.. that's about a 12.8 AFR (give or take a little).

The cruse side of the VE table needs some fine tuning, It runs rich.. then starts running lean. Once you get the VE dialed in it'll settle down.. 127-129 is what i shoot for on the BLM's.. getting them perfect is nearly imposssible.

[americasfuture2k]

ooo looks like a good thread to start getting help on tuning my setup. i have no idea where to start at for tuning. all i know how to do is all hardware side and very little software side. i can datalog, read and burn chips. but jump into tuning, i dont know where to start. and i get confused on all the info online. i need a walk through with my specific .xdf pretty much to get the frasp of it all and get onto it on my own.

im using that $A1 XFD superdave wrote