PCM, GEN 7 or FAST BIG STUFF 3 ?
Thread Starter
Melting Slicks
Joined: Nov 2000
Posts: 2,469
Likes: 6
From: Winchester Ontario
PCM, GEN 7 or FAST BIG STUFF 3 ?
If I had my car optimally tuned with the pcm in it now on the dyno making it's peak power limits (highest output possible with engine combo) and then swapped it out and switched to an aftermarket system like those mentioned in the title, what can be gained?
Example: 383 making 425 rwhp dyno tuned, fully optimized.
Now, switch to aftermarket system and retune. What can be gained if the engine combo was fully optimized?
Example: 383 making 425 rwhp dyno tuned, fully optimized.
Now, switch to aftermarket system and retune. What can be gained if the engine combo was fully optimized?
Drifting
Joined: Aug 2001
Posts: 1,500
Likes: 0
From: Holliston MA
Cruise-In VII Veteran
Nothing.
All 4 of the computers you listed control fuel and spark. If it's optimized, there isn't anything left. It's when you are unable to optimize a combination because of lack of control of some sort that one of the aftermarket systems will be of a benefit.
All 4 of the computers you listed control fuel and spark. If it's optimized, there isn't anything left. It's when you are unable to optimize a combination because of lack of control of some sort that one of the aftermarket systems will be of a benefit.
Thread Starter
Melting Slicks
Joined: Nov 2000
Posts: 2,469
Likes: 6
From: Winchester Ontario
What situations would lead to a combo being unable to be optimized?
I don't have anything too radical.
383
10:1
Super Ram
AFR 195 Eliminators
230/230 0.598"/0.598" with 1.6 CC Pro Mags
Hooker #2149 true duals, 2.75" Dynomax high flow cats to 2 chamber 40 series Flowmasters
ZF6 with McLeod Street Twin
3.33 rear gear
I don't have anything too radical.
383
10:1
Super Ram
AFR 195 Eliminators
230/230 0.598"/0.598" with 1.6 CC Pro Mags
Hooker #2149 true duals, 2.75" Dynomax high flow cats to 2 chamber 40 series Flowmasters
ZF6 with McLeod Street Twin
3.33 rear gear
Safety Car
Joined: Apr 2001
Posts: 3,525
Likes: 2
From: Houston TX
I agree with SloR, the aftermarket ECMs will add nothing (other than tuning ease and data log ability) when compared to a properly tuned factory ECM.
Situations where aftermarket would be appropriate are when you exceed the flow of the MA, youu add a lot of boost, a lot of N2O. Basically anything that is well beyond what the factory intended.
I try to convince people to stay with the factory ECM unless they are heavily modified.
Aaron
Situations where aftermarket would be appropriate are when you exceed the flow of the MA, youu add a lot of boost, a lot of N2O. Basically anything that is well beyond what the factory intended.
I try to convince people to stay with the factory ECM unless they are heavily modified.
Aaron
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Interesting. So you guys think that with his combo. He wont have issues in tuning it with the stock prom? Sounds great to me since my cam is only a 226/226 with a 383.
Last edited by 88BlackZ-51; Sep 20, 2007 at 10:40 PM.
Team Owner
Joined: Jun 2001
Posts: 26,196
Likes: 0
From: Orlando FL
St. Jude Donor '08-'09
im mildly/moderately modified running lots of nitrous. I had Alvin burn me two chips.. one for my mod setup and one with my mods + nitrous for the track. I am still using the stock computer. The car has never run better after I got my chips from him.
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Michael S. Palmer
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
I went from a stock ECM running 10.1s to an aftermarket GEN7 running 10.1s. Only thing that I gained was a little relief when I step on the scale - to the tune of 1700 dollars lighter in the wallet. 
I turn mine up at 7000 rpms. Oh yeah that was a stock MAF system too!
I turn mine up at 7000 rpms. Oh yeah that was a stock MAF system too!
Thread Starter
Melting Slicks
Joined: Nov 2000
Posts: 2,469
Likes: 6
From: Winchester Ontario
As usual, you guys gave me the answers I was looking for. I figured the stock pcm was good enough. I suppose there is always instances where tuning can be a pain, but I figured once it was tuned, just simply switching to an aftermarket computer wouldn't just make horsepower for the sake of making horsepower.
Rock on!
Rock on!
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
the up side is, it can get the job done.