Which prom should I use?
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Which prom should I use?
My car is an '86 with a 350 and the original TPI setup(I believe). I need to make sure whoever did this beautiful job upgraded the injectors first but I'm wondering what the best tune to start with is. I've tried several different tunes for 5.7L cars but they all have small problems I don't know how to tune around yet. Most of the ones I've tried either don't make the TCC lock up. Almost all of them throw an EGR code. I have one of those useless O2 sensor gauges that tells me the car is very lean, it hardly gets into the orange at around 50% throttle, and is usually not lit up at all. Only the $6E bins will work as the older ones always throw that terrible MAF code.
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Re: Which prom should I use?
Answer this for me?
#1. Cubic displacement IE: 305, 350, 355, 383, 406, etc.
#2. Transmission type: Automatic, or manual.
#3. Compression ratio and cylinder head type.
#4. Cam specifications: Duration & lift @ .050 & Lobe separation angle (LSA)
#5. Injector size: Brand & number preferred.
#6. Fuel rail number IE: 1708XXXX, or if using an adjustable pressure regulator? What is the desired pressure at idle with vacuum disconnected. I will recommend if asked.
#7. Vehicle Anti Theft System (VATS): Enable / Disable
#8. Exhaust gas recirculation (EGR): Enable / Disable
#9 Vehicle Speed Sensor (VSS): Enable / Disable.
#10 Charcoal Canister Purge (CCP): Enable / Disable.
#11 Air injector Reactor (Smog Pump): Enable / Disable.
#12. Cooling fan(s) settings: 160, 180, or 195. I recommend using at least a 180 thermostat for TPI.
#13 Knock sensor: High compression, and high lift cams can create chatter that will be picked up by the sensor. Knock sensor may need to be disabled in certain combinations.
#14. Speed limiter: Default is 255 mph / or specify desired speed.
#15. RPM limiter: Default is 10,000 RPM / I recommend limiting it to 800 rpm over peak horsepower expected.
#1. Cubic displacement IE: 305, 350, 355, 383, 406, etc.
#2. Transmission type: Automatic, or manual.
#3. Compression ratio and cylinder head type.
#4. Cam specifications: Duration & lift @ .050 & Lobe separation angle (LSA)
#5. Injector size: Brand & number preferred.
#6. Fuel rail number IE: 1708XXXX, or if using an adjustable pressure regulator? What is the desired pressure at idle with vacuum disconnected. I will recommend if asked.
#7. Vehicle Anti Theft System (VATS): Enable / Disable
#8. Exhaust gas recirculation (EGR): Enable / Disable
#9 Vehicle Speed Sensor (VSS): Enable / Disable.
#10 Charcoal Canister Purge (CCP): Enable / Disable.
#11 Air injector Reactor (Smog Pump): Enable / Disable.
#12. Cooling fan(s) settings: 160, 180, or 195. I recommend using at least a 180 thermostat for TPI.
#13 Knock sensor: High compression, and high lift cams can create chatter that will be picked up by the sensor. Knock sensor may need to be disabled in certain combinations.
#14. Speed limiter: Default is 255 mph / or specify desired speed.
#15. RPM limiter: Default is 10,000 RPM / I recommend limiting it to 800 rpm over peak horsepower expected.
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Which prom should I use?
My car is an '86 with a 350 and the original TPI setup(I believe). I need to make sure whoever did this beautiful job upgraded the injectors first but I'm wondering what the best tune to start with is. I've tried several different tunes for 5.7L cars but they all have small problems I don't know how to tune around yet. Most of the ones I've tried either don't make the TCC lock up. Almost all of them throw an EGR code. I have one of those useless O2 sensor gauges that tells me the car is very lean, it hardly gets into the orange at around 50% throttle, and is usually not lit up at all. Only the $6E bins will work as the older ones always throw that terrible MAF code.
RBob.
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iTrader: (1)
Joined: Mar 2002
Posts: 18,432
Likes: 233
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Which prom should I use?
"DIY PROM Do It Yourself PROM chip burning help. No PROM begging. No PROMs for sale. No commercial exchange. Not a referral service."
RBob.
Thread Starter
Junior Member
Joined: Apr 2016
Posts: 23
Likes: 0
Re: Which prom should I use?
Answer this for me?
#1. Cubic displacement IE: 305, 350, 355, 383, 406, etc. in the op
#2. Transmission type: Automatic, or manual. in my sig
#3. Compression ratio and cylinder head type. stock
#4. Cam specifications: Duration & lift @ .050 & Lobe separation angle (LSA) i asked for a stock bin, are you gunna tune my car for free?
#5. Injector size: Brand & number preferred. stock...hopefully I'll be checking later
#6. Fuel rail number IE: 1708XXXX, or if using an adjustable pressure regulator? What is the desired pressure at idle with vacuum disconnected. I will recommend if asked. factory failing unit
#7. Vehicle Anti Theft System (VATS): Enable / Disable 86 car, disabled
#8. Exhaust gas recirculation (EGR): Enable / Disable disable
#9 Vehicle Speed Sensor (VSS): Enable / Disable. enable
#10 Charcoal Canister Purge (CCP): Enable / Disable. disable
#11 Air injector Reactor (Smog Pump): Enable / Disable. disable
#12. Cooling fan(s) settings: 160, 180, or 195. I recommend using at least a 180 thermostat for TPI. 185 stat in there now
#13 Knock sensor: High compression, and high lift cams can create chatter that will be picked up by the sensor. Knock sensor may need to be disabled in certain combinations.
#14. Speed limiter: Default is 255 mph / or specify desired speed. 106.8 mph
#15. RPM limiter: Default is 10,000 RPM / I recommend limiting it to 800 rpm over peak horsepower expected. will be spinning to at least 10 every day
#1. Cubic displacement IE: 305, 350, 355, 383, 406, etc. in the op
#2. Transmission type: Automatic, or manual. in my sig
#3. Compression ratio and cylinder head type. stock
#4. Cam specifications: Duration & lift @ .050 & Lobe separation angle (LSA) i asked for a stock bin, are you gunna tune my car for free?
#5. Injector size: Brand & number preferred. stock...hopefully I'll be checking later
#6. Fuel rail number IE: 1708XXXX, or if using an adjustable pressure regulator? What is the desired pressure at idle with vacuum disconnected. I will recommend if asked. factory failing unit
#7. Vehicle Anti Theft System (VATS): Enable / Disable 86 car, disabled
#8. Exhaust gas recirculation (EGR): Enable / Disable disable
#9 Vehicle Speed Sensor (VSS): Enable / Disable. enable
#10 Charcoal Canister Purge (CCP): Enable / Disable. disable
#11 Air injector Reactor (Smog Pump): Enable / Disable. disable
#12. Cooling fan(s) settings: 160, 180, or 195. I recommend using at least a 180 thermostat for TPI. 185 stat in there now
#13 Knock sensor: High compression, and high lift cams can create chatter that will be picked up by the sensor. Knock sensor may need to be disabled in certain combinations.
#14. Speed limiter: Default is 255 mph / or specify desired speed. 106.8 mph
#15. RPM limiter: Default is 10,000 RPM / I recommend limiting it to 800 rpm over peak horsepower expected. will be spinning to at least 10 every day
Rbob thanks will try that out. I probably tried that one at some point, I was just hoping one would work better out of the box.
Last edited by WaterPumper; Jul 23, 2016 at 11:30 AM.
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