Idle and initial drive tune support needed

[SilverS2kV8]

Hi all,
Looking for a bit of help in building out a tune to get the car idling and in a driveable state after upgrades.

2000 LS1 out of a Camaro swapped into a 2002 Honda S2000. I had the motor, 100% stock with a LS6 MAF, mated to a slightly built T56. It was in the car for about a year, working out kinks with the swap before pulling it.

Motor is ready to go back in after upgrades... I made a lot of changes and don't really know what to do to get it back running...

Motor configuration I am looking to tune, coming from a 100% stock + LS6 MAF set-up. I highlighted what I think is most pertinent to the tune.

• Trickflow 225 Heads, 63CC chamber, and powdered metal guides
  Brian Tooley Racing LS9 multilayer gasket, 7 layer
  Stock rockers with Smith Brothers Bronze bearing trunion kit
  Brian Tooley Racing 0.630" lift dual spring with steel retainers
  LS7 Lifter, Trays, running 7.475" 5/16 pushrods
  Brian Tooley Racing Stage 3 NA LS cam, Specs: 231/244 .630"/.615" 112.5+2.5, INTAKE LOBE LIFT @ TDC: 0.05810
  IWIS Single row chain
  Meling High Flow/Pressure Oil Pump
  FAST 102 Intake
  FAST 102 Big Mouth TB
  FAST 36lb/hr (378cc) Injectors
  GM LS2 Fuel Rail
  GM LS6 MAF out of a 2003 Z06
  Currently as NGK TR5 plugs

I attached the last tune that was in the car. Speedo and related stuff is a bit of a mess to get the LS PCM to work with the stock S2000 dash. Car ran decent on the tune, no issues with AFR at WOT.

I do have an wideband AFR and Oil Pressure gauge in the car.

Any guidance on what to change in the tune to get it to idle is appreciated! I do plan on having it given a real good tuning with a local shop known for their work on LS motors later in the summer.

05142021_ speedoadjust.hpt

[bk2life]

this should be all you need

https://forum.hptuners.com/showthrea...e-(w-pictures)

[5FDP]

FAST doesn't have proper data for HP Tuners, those are kinda worthless.

[SteelDr89]

FAST doesn't have proper data for HP Tuners, those are kinda worthless.

I feel like this statement needs clarification. I'm using the FAST 303608, after a set of re-man GTP injectors stuck open on me. If the thread below is wrong, would be good to know.

https://forum.hptuners.com/showthrea...b-hr-injectors

[gametech]

I feel like this statement needs clarification. I'm using the FAST 303608, after a set of re-man GTP injectors stuck open on me. If the thread below is wrong, would be good to know.

https://forum.hptuners.com/showthrea...b-hr-injectors

People reply with what they know. Fast is well known for not providing gm data, and most people have no idea that some have been cross-referenced to known data. If you look at the dates, that poster joined the forum 2 years after that thread was started. He probably has never seen it.

[SiriusC1024]

The injector data is certainly not correct. Look at IFR. Here's the GTP data:
https://forum.hptuners.com/showthrea...l=1#post745105

It'd be ideal to get a different set of injectors. Actual GM ones with 100% factory data:
https://forum.hptuners.com/showthrea...l=1#post766924

Convert the tune to the 1bar SD OS. Tune VE and forget about the MAF.

[edcmat-l1]

That cam will definitely run better in SD. 100%

[Alvin]

Those injectors are pretty easy to work with IMHO. I wouldn't change them. We use them in house for smaller builds in house although you'd have a hard time maxing them out NA.


Post a log. A lot of initial start up stuff has issues to diagnose. Sensors not reading as they should. etc.

I agree this would be best in speed density.

[SilverS2kV8]

Thanks for the initial replies. Got some reading to do!
I'll look into SD tuning as well.

Motor goes back in car this weekend but probably won't being a position to start and log for another couple of weeks.

[SilverS2kV8]

The injector data is certainly not correct. Look at IFR. Here's the GTP data:
https://forum.hptuners.com/showthrea...l=1#post745105

It'd be ideal to get a different set of injectors. Actual GM ones with 100% factory data:
https://forum.hptuners.com/showthrea...l=1#post766924

Convert the tune to the 1bar SD OS. Tune VE and forget about the MAF.

Thanks Sirius for the info. I was able to find all the places to input the 36lb GTP injectors you linked to but the last one. "Fuel to Wall" transient. I found something similar "Fuel to Wall Impact Factor" that has very similar labels but not exact. The Y axis goes in steps of 20 not 10 like in the excel sheet, and the X axis labels are slightly different. Is this the right spot to input these values or am I missing the spot to enter them?

[SilverS2kV8]

That cam will definitely run better in SD. 100%

Edcmat, any threads that are worth reading on how to get started with an SD tune. I did a search and nothing popped out as being helpful. I did find a thread on LSTech outlining how to get the ECU into SD mode and initial start-up for tuning, but it lacked info for me to fully grasp what I was changing.