Get ready to rumble!
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Rookie
Joined: Jan 2011
Posts: 58
Likes: 0
From: British Columbia, Canada
Get ready to rumble!
My good friend has been very impressed with my recent 408 build. He too will run a stock cam with 1.7 rrs and compression in the 10 area.
Now our battle...he says that I wasted some big coin on a tune from B&G. He plans on running 27 to 28lb injectors with a Mopar Performance ECU. Claiming that with the stock cam all will be well. He also says that the ECU has the ability to add or subtract up to 30% of fuel delivery.
I say no buddy! You will be far better off with the tune. Who's right here?
Now our battle...he says that I wasted some big coin on a tune from B&G. He plans on running 27 to 28lb injectors with a Mopar Performance ECU. Claiming that with the stock cam all will be well. He also says that the ECU has the ability to add or subtract up to 30% of fuel delivery.
I say no buddy! You will be far better off with the tune. Who's right here?
Administrator
Joined: Apr 2010
Posts: 87,399
Likes: 4,214
From: Clayton MI
You are. Sorta.
If he is going to build a big cube motor, even if he uses the EXACT same parts as you, without a tune, he is NOT going to make as much power as you. Sure, the computer CAN compensate to some extent, but, the idea is, that it shouldn't have to, to attain max efficiency. I will be surprised if he can get it to run reasonably well at all. He is making major changes to the engine, and not cluing in the PCM. OOops.
If he is going to build a big cube motor, even if he uses the EXACT same parts as you, without a tune, he is NOT going to make as much power as you. Sure, the computer CAN compensate to some extent, but, the idea is, that it shouldn't have to, to attain max efficiency. I will be surprised if he can get it to run reasonably well at all. He is making major changes to the engine, and not cluing in the PCM. OOops.