Patriot Six

I think i paid $1175 for the new secondary drive. Could be more if you need the latest A&A bracket, too.

Nick_04k

Your right, A&A secondary drive is 1100+, i dont think that is the route i would go though because i dont want to replace my balancer again.

I think i want a cartek, DP, old style A&A DD...?
I know there is obviously a reason they changed there design, but alot of people are happy with their old style DD, right?

Nick_04k

Side note... Ordered the 3177 plugs my tuner asked for and pulled my TR6's out. They were gapped to 0.35. Anybody think thats too much gap for the 10psi i was making on E? I dont think these new plugs are going to fix my issue but im just listening to those trying to help me.
Guess we'll see what happens tomorrow when the new plugs get here.

Patriot Six

Older style DD set ups had issues losing voltage at higher rpms due to belt slip on the alternator. The new A&A secondary drive eliminates that issue.

If you're going to go DD, I wouldn't do anything but the new A&A set up.

schpenxel

New A&A DD setup looks really nice.. that's what I'd get if I were in the market for one also

Unreal

Agreed, No reason to do all that work/pain just to introduce a new issue.

Nick_04k

Okay guys thanks for the advice!

Now any input on my latest issue...
Car runs the AFR up to around 13 at around 4500rpm and maintains that through the rest of the pull. This is on E60 @10psi boost.
My fuel system is an ECS E85 A1000 kit. Tuner says adding fuel to the tune doesnt change the AFR.

I have checked that my HOBBS switch is functioning properly and the pump moves fuel through the rail when i add pressure to the hobbs. Idk what else to check, this issue is weirder than the last!

I also think its weird that the AFR stays the same even though its leaner than commanded. If it was out of fuel it would go progressively leaner right?
Scratching my head here.

SBCGENII

Check IDC and fuel pressure.

Nick_04k

IDC is super low. Like 50% i think. No way to check FP unless i install a gauge?

Nick_04k

Okay looking through all my logs i noticed that early on when my boost was only ~7psi i was getting MAF readings of around 85lb. Now on 10psi and with more timing my MAF readings are only around 77~80lb.

Correct me if im mistaken but this table measures total airflow and it is now reporting that the car is taking in less air then it was previously right? This may be my issue...?

SBCGENII

If you have stock fuel rails there is a port on front of them you can hook a gauge too. Sounds like you have a tuner issue though. Post your log and tune.

Nick_04k

e855.hpl

5 (1).hpt

realcanuk

Fuel pressure is on your log, although it seems a little bit too steady to be right.. If it is right, its fine.

You should really be logging in lambda... if that AFR is right, its way lean in boost. I don't know how that is being tuned properly when the tables read.. maf/ lamda error, but I don't see lambda being logged. What error is being used to tune the MAF ??

Nick_04k

Canuk thanks for taking a look at it!

Im sorry, i dont know what im doing really.
Brand new to HPT, really only looking at my logs in the config my tuner is using.
Does the car actually have a FP sensor? I thought it did not. I dont have an aftermarket one installed.
Wideband is being read in AFR i believe. I know that its lean but i dont know why it wont richen up when he changes the tables. In comparison vs my 91 octane logs the MAF is consistently reading lower even though boost is up...This is all i can make of it really but like i said i have extremely limited knowledge of the tables or how they function.

schpenxel

If you’re logging fuel pressure and don’t have a sensor that you physically added to the car then that data is useless. The ecm will report 58psi no matter what (because these cars don’t come with a fuel pressure sensor so it doesn’t know what the fuel pressure actually is)

schpenxel

Add something large like 15% to the whole maf table and see what happens. If that doesn’t make afr change then something else is going on IMO.

realcanuk

If your tuner can't figure out why it won't get richer with changes, you need a new tuner.

Nick_04k

My tuner is Shane Hinds, i hear nothing but good things about him. He has been very timely with me and got the car running good very quickly. It wasnt until we switched to Ethanol that i developed the lean issue that I havent solved. He said he added alot of fuel with no luck in changing AFR.
Thats why i asked about the MAF sensor.
Isnt it possible that its reading decent at low velocity but so badly during boost that it wont fuel for the air its getting?

I tried cleaning MAF today and it actually seemed to make the car worse...I can get it to stumble a little in park while holding 2000rpm now.

Originally Shane thought that the car had a misfire, i couldnt ever detect one and never had a code pulled. I installed new OEM coils, wires, and NGK 3177 gapped to .030. I just dont see the car still having a misfire at this point?

realcanuk

As far as I know he is a very good tuner. If he is remote tuning I suppose he can't really check for mechanical problems. I'm just surprised the scanner seems to be set up in a way that doesn't make sense. The MAF/ lambda chart doesn't even populate so I don't see how one can correct the fueling.

Nick_04k

I think he doesnt want to try and play mechanic over email, i dont blame him for that one bit. At this point i dont know what to do other than throw more parts at it. Im going to buy a new MAF tomorrow if i can get one in town, i would assume local GM dealer would have one on the shelf.
If that doesnt work the only other thing i can even think of is maybe the main coil harness...Ill do that as an absolute last effort.