Originally Posted by Luna X
like an F15 fighter jet on the runway?
I have an aftermarket air filter on it, and I recently replaced the fan clutch. But this thing is loud! My 350Z (same size engine btw) creates a beautiful growl but doesn't have anywhere near the loud, whirring noise that comes from the engine of the VX...
... that leads me to another question.
How does Nissan get 75 more horses from their 3.5 than what Isuzu produces? Is it mostly in the computer? Would remapping work? (If it can even be done)
I'd love to get a little more power, but since the supercharger is no longer available, and turbo kits are more of a piece together, it seems like choices are quite limited.
any idears?...
Also the 350Z has about 10.3:1 compression and the Isuzu 3.5 is a bit over 9:1, just increasing the compression ratio and nothing else, you're only looking at maybe a 10-15hp increase at the engine at most. Also there is no tuning software for our trucks that we can just plug in and mess around with which sucks and I wouldn't trust a JET computer on anything I own. You can wire up a megasquirt to control the fuel/timing on our engines though which will help, HP Heaven can custom grind cams for the Isuzu V6's but they are in australia and the price will be a little expensive. Also, engine design plays a big part, just because one engine puts out the same displacement as another, doesn't mean they should be equal. Valve timing, ignition/fuel curves, stroke/bore, etc. The Nissan engine uses a shorter stroke and larger bore. We really have no "bolt-on" ways of making alot more HP out of these things so it's all going to be a custom [project until someone decides to start producing stuff. You can send your piston/rod off to someone who will make forged/billet versions of them, slap them in there, slap a turbocharger on it, megasquirt computer and tune it with 10-15psi of boost and you'll have a pretty peppy engine lol
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