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I can't help with the clearance question, I've always taken my machine shop's advice on that. It is worth considering that a shop that does that every day for road cars will be looking for as good as they can get off the shelf, not perfect. If you want more careful race style "blueprinting" then you need a race shop to measure/machine the engine. I do have an opinion on line boring the block though....don't do it unless you have to. The crank centre moves higher but the oil pump stays in the same place when you line bore the block. -
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By Dose Pipe Sutututu · Posted
There's no figuring out with a Haltech, you literally load up the base map, plug in the vac/boost reference from your manifold to the ECU (or an external MAP) sensor, wire up an IAT and it will run pretty well out of the box. The ignition tables are quite well defined and safe enough for someone to give it a hit (although I don't recommend it if you've got anything besides the stock gear on the motor). -
By joshuaho96 · Posted
You're not wrong, but more than a few times I've heard of people running into issues where their injector characterization isn't quite right and that approach works for that specific configuration but once they switch over to a new set they discover a whole bunch of stuff wasn't set up correctly. It's slightly more annoying to reverse engineer the OEM MAF transfer function but you already have the sensor wired up to the factory harness so keeping it around for a few weeks more while you figure out the tune is easy enough. I've seen GM also use a combination of both MAF + MAP in their ECUs before, MAF is for steady state and a calculation of the cylinder VE to correct the base VE table, then in transients it uses that calculated VE + raw MAP to determine cylinder filling somehow. -
By SeanR32GtSt · Posted
I know this one’s the BB one. My tuner did make mention about the actuator. I am curious about the VCT as well
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