1982 hyper tech and/or C4 ecm question
Thread Starter
Drifting
Joined: Jun 2004
Posts: 1,881
Likes: 9
From: staten island ny
1982 hyper tech and/or C4 ecm question
Considering tinkering with my 82 a little more. Was looking at the hyper tech chip and wanted to know if anyone did it and did they consider it worth it? What did it do better? Also considering the C4 ecm route. Was it worth it ? What differences did you see? In my car I wiped a cam so I replaced it with one from comp cams, ever so slightly hotter than stock. Also have the upgraded 85 fuel pump and DCS in-line fuel pressure gauge and it’s adjusted to 15 or so. Also true duals with x pipe crossover. Thoughts?
Safety Car
Joined: Nov 2005
Posts: 3,532
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From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
I would go EBL, but you "may" have to do some tuning. Just my opinion. What are the cam specs and what's the dur @ .050"? What heads are you running?
Thread Starter
Drifting
Joined: Jun 2004
Posts: 1,881
Likes: 9
From: staten island ny
the cam was done a while back, can’t remember the specs but it was the only grind available and it only slightly hotter than factory. As for the heads they are the stock smog heads. And I’m sorry but EBL?
Melting Slicks
Joined: May 2021
Posts: 2,276
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From: Fleming Island, FL
Forgot the hypertech chip, they really don't do much. Turning up the fuel pressure doesn't always result in better performance. At 15 PSI I would guess that your WOT A/F ratio is probably somewhere's in the 11 to 1 range. I would invest in a wideband meter and for a "wet" designed intake manifold I would adjust for a WOT of 12.5 to 1 A/F ratio. I have an innovative LM-2 and would recommend it. For ignition timing, 1/4 mile testing is the only way to adjust that. However you are basically limited to moving the distributor back and forth a few degrees. Stepping up to ECM tuning allows you to make the better adjustments that you able to do with a mechanical carburetor/distributor setup. One thing that I would like to point out is when you changed the camshaft and exhaust, the idle vacuum probably drop and stock speed density EFI systems will overly richen the idle mixture. Coupled with the 15 PSI of fuel pressure, the person sitting behind you at a traffic light eyes are probably tearing up, fouling your spark plugs, and washing the oil from the cylinder walls, etc. I use Tuner Pro software with the Moates Autoprom chip programmer/emulator setup. Although it can be a bit tedious to tune, the drivability is about as good as it gets for a throttle body injected car.
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
OK, but it would be nice to know your cam specs for me to even get a good idea what you have going on in relation to the stock ECM. The EBL is a new ECM for your car which is 100% plug-n-play and the tune that comes preloaded "may" work just fine with your motor. However, The tune was optimized for a GM spec base timing of 6* and fuel pressure of 13psi, also a GM spec. The tune runs very good, but can be tweaked if needed. IMO, 15psi is more than likely not needed, but without a WB 02, you really don't know what you have in relation to AFR at that setting. GL
Thread Starter
Drifting
Joined: Jun 2004
Posts: 1,881
Likes: 9
From: staten island ny
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
OK, that's not much of a difference from stock actually and the EBL stock tune should work just fine with that cam. Plus... You can change the tune to accommodate any mods you want to throw at it down the road and just tweak the tune with your laptop to include NO2 system. I wouldn't even consider a C4 ECM for your engine at this point and it would be pointless anyway..
Thread Starter
Drifting
Joined: Jun 2004
Posts: 1,881
Likes: 9
From: staten island ny
OK, that's not much of a difference from stock actually and the EBL stock tune should work just fine with that cam. Plus... You can change the tune to accommodate any mods you want to throw at it down the road and just tweak the tune with your laptop to include NO2 system. I wouldn't even consider a C4 ECM for your engine at this point and it would be pointless anyway..
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Drifting
Joined: May 2020
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From: Baton Rouge, Louisiana, metro area
My 82 is completely stock. I got an 84 ECM a couple of years ago to store my original 82 ECM for future NCRS. I have been running a stock 84 for two years. I really did not notice any difference in performance when I swapped them. The car runs great with both 82 and 84. For a driver like me, I think the biggest difference at this point is availability. I don’t race or even push mine very hard. (I got a C5 for that) Good luck finding a working 82ECM. The 84s on the other hand are out there if you look hard enough.
I plan to swap to Bucaneer’s EBL system as soon as money stops pouring out of my bank account. I am really looking forward to installing it and taking my 82 to the next level.
If I were shopping now, I would take the couple hundred bucks for the 84 and apply it toward the new, tunable system Bucaneer has.
I plan to swap to Bucaneer’s EBL system as soon as money stops pouring out of my bank account. I am really looking forward to installing it and taking my 82 to the next level.
If I were shopping now, I would take the couple hundred bucks for the 84 and apply it toward the new, tunable system Bucaneer has.