Twilightoptics
Supreme Member
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Feb 26, 2025
- Join DateFeb 2000
- LocationSeattle, Washington
- Posts:1,170
- iTrader Positive Feedback0
- iTrader Feedback Score(0)
- Car'87 IROC-Z/'82 RX7
- EngineSBC 355/1.1L Rotary
- TransmissionT56/5 Speed
- Axle/Gears4.33/3.93
- Likes:0
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'87 350 165ecm.
Can I run the ARAP bin, without changing it?
Aside from changing the injector constant to what it should be, disabling vats, fixing fans, and unplugging the cold start...
Can I just burn it and have my car run well?
There seem to be ALOT of differences in the arap bin to the stock 350 $32b bin. Since the $6 is hacked so much more and I can change so many things I think I'd like to use that, however I'm not sure what the stock parameters are with this.
I havn't been able to find a descent $32b ecu file to use with GMECM and my stock '87 350 bin or I'd start there.
I am currently having issues of a surging/searching idle in Park/Neutral, bad gas milage *16mpg hwy* and I have to crank the key for a while to get her to start.
Physically tuning is done and good. I am also going to attempt to tune for more power at the track, after I get these few bugs worked out.
Thanks
-Paul
Can I run the ARAP bin, without changing it?
Aside from changing the injector constant to what it should be, disabling vats, fixing fans, and unplugging the cold start...
Can I just burn it and have my car run well?
There seem to be ALOT of differences in the arap bin to the stock 350 $32b bin. Since the $6 is hacked so much more and I can change so many things I think I'd like to use that, however I'm not sure what the stock parameters are with this.
I havn't been able to find a descent $32b ecu file to use with GMECM and my stock '87 350 bin or I'd start there.
I am currently having issues of a surging/searching idle in Park/Neutral, bad gas milage *16mpg hwy* and I have to crank the key for a while to get her to start.
Physically tuning is done and good. I am also going to attempt to tune for more power at the track, after I get these few bugs worked out.
Thanks
-Paul
Supreme Member
It kinda has a lot of timing, but will work as is. Just keep an eye out for knock.
Supreme Member
The ARAP is just recommended as what to START WITH.
It was the last and most refined of the 6E bin files.
It's a high timing chip, and in the stock applications gave the best performance but with any engine modes is too much.
It was the last and most refined of the 6E bin files.
It's a high timing chip, and in the stock applications gave the best performance but with any engine modes is too much.
Supreme Member
Quote:
Originally posted by Twilightoptics
Aside from changing the injector constant to what it should be, disabling vats, fixing fans, and unplugging the cold start...
Can I just burn it and have my car run well?
There seem to be ALOT of differences in the arap bin to the stock 350 $32b bin. Since the $6 is hacked so much more and I can change so many things I think I'd like to use that, however I'm not sure what the stock parameters are with this.
I am currently having issues of a surging/searching idle in Park/Neutral, bad gas milage *16mpg hwy* and I have to crank the key for a while to get her to start.
Just to back up a little, you also want to make sure things are fine mechanically, before doing any chips.Originally posted by Twilightoptics
Aside from changing the injector constant to what it should be, disabling vats, fixing fans, and unplugging the cold start...
Can I just burn it and have my car run well?
There seem to be ALOT of differences in the arap bin to the stock 350 $32b bin. Since the $6 is hacked so much more and I can change so many things I think I'd like to use that, however I'm not sure what the stock parameters are with this.
I am currently having issues of a surging/searching idle in Park/Neutral, bad gas milage *16mpg hwy* and I have to crank the key for a while to get her to start.
And by changing injector constant I hope your not one into this idea of chaning inj constants to dial in the BLs.
Twilightoptics
Supreme Member
close
Feb 26, 2025
- Join DateFeb 2000
- LocationSeattle, Washington
- Posts:1,170
- iTrader Positive Feedback0
- iTrader Feedback Score(0)
- Car'87 IROC-Z/'82 RX7
- EngineSBC 355/1.1L Rotary
- TransmissionT56/5 Speed
- Axle/Gears4.33/3.93
- Likes:0
- Liked:0 Times in 0 Posts
I'm changing the injector constant so I'm not lying to the ECM with my 24lb SVOs.
I don't quite understand why you can't change the injector constant to get close in blms, but I know that's a large debate.
Not quite sure what to change in the fact that some people say play with the MAF tables, and some say don't touch them.
Mechanically everything is working to the best of my knowledge. The only thing I would be unsure about would be the EGR valve because I don't know how to check it, though I'm not throwing any codes.
My Maf is good as are the relays, along with the plugs, wires, etc.
I am going to RE-clean my IAC this afternoon in hopes of helping an idle situation.
As for modifications, I am a big modded. See Sig:
I don't quite understand why you can't change the injector constant to get close in blms, but I know that's a large debate.
Not quite sure what to change in the fact that some people say play with the MAF tables, and some say don't touch them.
Mechanically everything is working to the best of my knowledge. The only thing I would be unsure about would be the EGR valve because I don't know how to check it, though I'm not throwing any codes.
My Maf is good as are the relays, along with the plugs, wires, etc.
I am going to RE-clean my IAC this afternoon in hopes of helping an idle situation.
As for modifications, I am a big modded. See Sig: