P&H question
#1
P&H question
my plan is to run the 90-92 tpi ( 8d I belive off the top of my head right now) with the 7749 ecm. I will only run 4 P&H port injectors (so no need for a extra driver or sense resistor) and it will be wired with the jumper wires to the P&H pins.
now my question---- is this all that has to be done or is there something in the code which needs to be changed?
and for the future I thought there was a made up boost of this code rather than using the ty/sy 58 code for future plans I have.
now my question---- is this all that has to be done or is there something in the code which needs to be changed?
and for the future I thought there was a made up boost of this code rather than using the ty/sy 58 code for future plans I have.
#2
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iTrader: (2)
Re: P&H question
From testing on my bench all you would need to do is substitute the '7749 for the '7730, but didn't look specifically at running the injectors in P&H mode. I should test that, been something I have been curious about anyway.
If you want to run boost, $59 would be your best option. It started as $58, but has had many improvements made to it. www.code59.org
If you want to run boost, $59 would be your best option. It started as $58, but has had many improvements made to it. www.code59.org
#3
Re: P&H question
I know the 730/749 are swappable as I belive one more pcm I have is as well (pin outs are the same but the pcm info is not out there).
I just need to know if the P&H is only done by the jumper wires or something in the code. I should have a copy of the 59 mask since I ran that several years ago on my old formula. I just want the 8d code due to some tables it has that the ty/sy and sunbird/GA don't have.
I just need to know if the P&H is only done by the jumper wires or something in the code. I should have a copy of the 59 mask since I ran that several years ago on my old formula. I just want the 8d code due to some tables it has that the ty/sy and sunbird/GA don't have.
#5
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Re: P&H question
Your first post is a little confusing. To run the 4 PnH port injectors you need the extra injector driver setup that the '7749 has. A '7730 ECM won't work.
Wire the injectors the same way GM wired them for the Turbo Sunbird or Turbo Grand Am. This will be 2 injectors in parallel on each driver. Note that this is different then the way the Sy/Ty injectors are wired, so don't go by that setup.
The '7749 is short a quad driver over the '7730 ECM. The $8D code uses that driver for the TCC. Whether this is an issue depends upon whether a TCC is desired.
Then use a Turbo Sunbird/Grand Am MEMCAL.
RBob.
Wire the injectors the same way GM wired them for the Turbo Sunbird or Turbo Grand Am. This will be 2 injectors in parallel on each driver. Note that this is different then the way the Sy/Ty injectors are wired, so don't go by that setup.
The '7749 is short a quad driver over the '7730 ECM. The $8D code uses that driver for the TCC. Whether this is an issue depends upon whether a TCC is desired.
Then use a Turbo Sunbird/Grand Am MEMCAL.
RBob.
#6
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iTrader: (2)
Re: P&H question
Just a couple things that come to mind.
The sense resistors will need to be changed to .050 ohm resistors to run 8 low-Z injectors in P&H.
The MEMCAL should be a V8 MEMCAL, so that the cylinder count matches up.
I had some minor rough running issues initially with my car, and changed a couple things including the MEMCAL from a 4 cyl to a 6 cyl MEMCAL. I'll have to reinstall the 4 cyl MEMCAL to know for sure if that has an effect or not. The other change I made at the same time was locking out the dizzy.
I did forget about the lacking quad driver being used for the TCC though. That could be an issue.
The sense resistors will need to be changed to .050 ohm resistors to run 8 low-Z injectors in P&H.
The MEMCAL should be a V8 MEMCAL, so that the cylinder count matches up.
I had some minor rough running issues initially with my car, and changed a couple things including the MEMCAL from a 4 cyl to a 6 cyl MEMCAL. I'll have to reinstall the 4 cyl MEMCAL to know for sure if that has an effect or not. The other change I made at the same time was locking out the dizzy.
I did forget about the lacking quad driver being used for the TCC though. That could be an issue.
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#10
Re: P&H question
"my plan is to run the 90-92 tpi ( 8d I belive off the top of my head right now) with the 7749 ecm. I will only run 4 P&H port injectors (so no need for a extra driver or sense resistor) and it will be wired with the jumper wires to the P&H pins. "
yes it was missed but thanks
#11
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iTrader: (2)
Re: P&H question
How are you going to run a V8 with only 4 injectors?
The way I read it was that you were saying 4 injectors per driver, hence the desire to use the '7749, over the '7730.
Maybe you need to explain a little more of what it is that you are trying to accomplish, so that we can better understand and advise you.
The way I read it was that you were saying 4 injectors per driver, hence the desire to use the '7749, over the '7730.
Maybe you need to explain a little more of what it is that you are trying to accomplish, so that we can better understand and advise you.
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