g356gear

iTrader: (12)

I am really surprised at the A/F ratios with the cams. You would think the ecu would read the lean condition from the O2 sensors and try to richen it up a bit. Maybe time for an Apexi V-AFC 2 to add the extra fuel. There's should be no way the injectors are at their max duty cycle.....nothing has really been changed with the fuel system ( like with FI )

zxsaint

mjedens, is there any need (or benefit) of running a higher octane with your new setup?

Z1 Performance

iTrader: (564)

there is only so much room the stock ecu has to work with

this car is begging for some form of programmable engine management...not something I would personally trust to mail order

UnderPressure

iTrader: (4)

Side note:

Every 350Z we have dyno'd has run an a/f of ~13.5 stock. An a/f of ~12.5 is considered "high" for forced induction, not n/a.

Z1 Performance

iTrader: (564)

how are you measuring that A/F? What kind of meter? Located where?

mjedens

iTrader: (3)

I don't think you were asking me but mine was measured with a wide band on a bung located on the test pipe. ( New Info ) Just got off the line with technosuare telling them I was sending back my ECU so they could add some fuel down low and they wanted $150. for what they said was going to be a custom job!!! That would mean I've given them $750. to take the speed limiter off, increase the rev limiter, and add some fuel. That's "BS"!!! I'll park the son of a ***** until I find another way to adjust the A/F , no matter what it costs. Any ideas? Mike

MY350Z.COM

iTrader: (2)

WTH? I thought there was a 1 time fee?

ravaz

iTrader: (1)

Get a stand alone and call it a day. You've spent this much already, why not just get a stand alone like a FAST system or DFI Gen7 and not worry about the stock ECU? Your about halfway there already with what you spent with TS...

apex locator

iTrader: (5)

i was quoted the regular 600 for a tweaked ecu flash for my mods. but if i wanted to strap the car on a dyno for TS to tune, then it would cost more obviously.

TS needs to be more specific with their "one-time fee" policy. i dont think you should be charged the extra 150 as long as you pay for the shipping costs.

Z1 Performance

iTrader: (564)

Mike - I heard something interesting today as far as an ecu option....want to do some more digging before I tell you about it though

UnderPressure

iTrader: (4)

A/F has been read from the tail pipe using both a Motec Wideband and Autronic Analyzer Model B. The readings from both units have been ~13.5-8 @ WOT. We dyno quite a few race only, leaded fuel, cars so we change out O2 sensors on a regular basis.

Have you been seeing different numbers from cars on your dyno?

UnderPressure

iTrader: (4)

Do yourself a favor and forget about Accel DFI or Fast. Both of these systems are goods in their own right. ie. F-bodies or 5.0's. The real advatage these systems offer for the afore mentioned vehicles are the use of factory type connectors. This makes the wiring harness a psuedo plug & play.

However.... the interface and software is horrible compared to any of the other options, Autronic, AEM, Motec. As well as the prefabricated harnesses suck when it comes to routing on any other type of vehicle. A wiring harness designed to plug onto a 5.0 will cause you to have nightmares when installing on any other motor. Even it's close cousin the 4.6, trust me on this one....

Personally I'm working on installing an Autronic SM2 on my Z. I've had this project on hold for a while but now I have time and funds to finish it. I'll post result once it's finished and tuned.

Sorry for the off topic responses.

Blownaway

iTrader: (1)

Wow, This concerns me. I have all of these parts ready to go and already sent an email to Technosquare about it and there response was odd, they said that they wernt looking to sponsor a show car, bo where in my email did I ask them to sponsor anything, seemed really arrogant to me. I emailed them a mod list and said can you make me a program for it. But I have all of this stuff waiting to go and dont want to be dicking around with not being able to tune it. I am up for another source as well, please keep me in the loop.

Thanks.

apsilon

Sorry to continue off topic but all you guys looking at replacement ECUs, what are you going to do about ABS, VDC/TC, EBD, throttle etc?

UnderPressure

iTrader: (4)

All the standalone will control is the engine management. Stock ECU will still control VDC, ABS etc... Stock ECU will also control cam timing for the meantime until a method of management can be devised.
Throttle body control is handled outside of the Stock ECU and Standalone.

apsilon

OK, I was under the impression you were completely removing the stock ECU but you're just using the same functionality as the piggybacks just in a superior unit with more control.

Throttle body control is handled outside of the Stock ECU and Standalone

Not sure what you mean here. Does this mean going to a mechanical throttle setup?

Z1 Performance

iTrader: (564)

UnderPressure - only car we checked A/F on was mine using the Horiba wideband, mounted at the joint of the "Y"...read in the high 12's at WOT in the upper rpm ranges. So you are doing a similar setup to what we have done with standalone on Subaru's for years - a quasi piggyback, where the ecu controls fuel and timing, and the stock ecu controls everything else.....should work nicely! We had planned on doing this to mine as well using a TECIII (we are long time Electromotive users), though with this new info I have, may be trying something else out.

if you are seeing mid 13's at test pipe side (just off the manifold), that is crazy lean...definately get something in there to take care of it!

UnderPressure

iTrader: (4)

No, keeping the throttle-by-wire system, we just have a few ideas on how to actuate the throttle plate. Going to try 2 or 3 ideas and see what works best. Ie. having the accel vs throttle position a linear function or non-linear. Yet another part of the project I'll keep the board updated on.

Z1...
PM me with this mystery info. I have a guess as to what it might be.

Z1 Performance

iTrader: (564)

TP should be easy to actuate so long as your intended ecu has a powered output. I have not looked at the schematics for it yet, but IIRC its solenoid activated no?

g356gear

iTrader: (12)

mjedens,
Which pistons are being used with this set-up?? What compression is it running? I wonder if the piston design could have any effect on the A/F ratios we are seeing with this set-up.