I have a Gen 4 / 5.3 swapped into my 94 OBS. The DOD, VATS and downstream O2 sensors have been deleted from the E38 ECM. I paid a local guy who charges $500 for dyno tuning 200 for the bench service to get me up and running... He'll charge the balance of $300 when I bring the truck back for a Dyno Tune.
I replaced the OEM cam with a stage 1 (205 duration) truck cam , added a Cold Air Intake and long tube headers.
I gave this info to Mr. Tuner who seems to have done a so/so job so far.
I've got it running in the garage with the 0171 & 0174 codes lighting up the Check Engine lamp. I haven't found any vacuum leaks and have 16-18 inhg at the brake booster. My research indicate this is normal???
The ECM is also logging an O2 sensor heating circuit failure on Bank 1 Sensor 2... so, sooooo... I think this may be something Mr. Tuner overlooked, which leads me to questions and research about tuning.
I know very little about this stuff... so here goes some simple questions made with the assumption that I need more fuel...
1. Will a set of 36 lb injectors add enough "extra" fuel to richen up the cylinders? The OEM injectors currently installed are 30 lbs.
These are what I'm thinkin' about: https://www.glennsautoperformance.com/products/new-set-of-8-delphi-36lb-truck-height-fuel-injectors
2. Sense my E38 need's a final tune why spend $300 for a one and done Dyno tune when I could put that money towards a pass-through or handheld tuner that I could monkey around with here at home?
3. Are EFLive and HP Tuners the only routes to go, or would one of these be more suitable for the casual enthusiast like me?
https://www.amazon.com/dp/B075C8V9K...olid=23US50PNJMHCP&psc=1&ref_=lv_ov_lig_dp_it
https://www.amazon.com/dp/B08BGW18D...olid=23US50PNJMHCP&psc=1&ref_=lv_ov_lig_dp_it
I replaced the OEM cam with a stage 1 (205 duration) truck cam , added a Cold Air Intake and long tube headers.
You must be registered for see images attach
I gave this info to Mr. Tuner who seems to have done a so/so job so far.
You must be registered for see images attach
I've got it running in the garage with the 0171 & 0174 codes lighting up the Check Engine lamp. I haven't found any vacuum leaks and have 16-18 inhg at the brake booster. My research indicate this is normal???
The ECM is also logging an O2 sensor heating circuit failure on Bank 1 Sensor 2... so, sooooo... I think this may be something Mr. Tuner overlooked, which leads me to questions and research about tuning.
You must be registered for see images attach
I know very little about this stuff... so here goes some simple questions made with the assumption that I need more fuel...
1. Will a set of 36 lb injectors add enough "extra" fuel to richen up the cylinders? The OEM injectors currently installed are 30 lbs.
These are what I'm thinkin' about: https://www.glennsautoperformance.com/products/new-set-of-8-delphi-36lb-truck-height-fuel-injectors
2. Sense my E38 need's a final tune why spend $300 for a one and done Dyno tune when I could put that money towards a pass-through or handheld tuner that I could monkey around with here at home?
3. Are EFLive and HP Tuners the only routes to go, or would one of these be more suitable for the casual enthusiast like me?
https://www.amazon.com/dp/B075C8V9K...olid=23US50PNJMHCP&psc=1&ref_=lv_ov_lig_dp_it
https://www.amazon.com/dp/B08BGW18D...olid=23US50PNJMHCP&psc=1&ref_=lv_ov_lig_dp_it