Quote:
Originally Posted by jr_ss
You're right, an SR in factory or BPU trim isn't. When you start pushing 5-600crank hp, it is. Having a means to monitor and protect your investment is what upgrading to a quality EMS is all about, regardless of the amount of power you're making. You don't see your beloved 2j making gobs of power on a stock EMS do you? We don't care if you live or die in your stock, don't upgrade anything mentality and world, but leave your bible thumping 2j rhetoric out of this thread.
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a 5.3L is an LSx V8, not a 2jz. I never mentioned the 2jz. That said, yes I've also been able to keep 2jz-gte engines at 500~rwhp using a stock computer and a SAFC, as well as stock 5.3L LSx can keep the OEM ECU (HPtuner is preferable over say, megasquirt) at 800rwhp or better. Since the OEM computer of the 2jz uses a map sensor and comes factory with a turbo, the timing is relatively 'safe' at moderate boost pressures since there is little difference in timing between 12 and 18psi of boost, although methanol injection is highly recommended.
Furthermore, you might not realize this but the sr20det is very similar to the 2jz-gte, both are 86x86mm engines and both use a 8.5:1 compression factory cast aluminum piston, & hemispherical combustion chamber.
No sr20 should be pushed beyond 400rwhp when there are engines available for less cost that will support more power. Unless you have a specific reason to hold on dearly to the sr20- it just doesn't make any sense to use a 2.0L, to "build" a 2.0L of any kind. I am only a fan of stock components when they suit the application. If I want 800rwhp and there were no stock engines to hold that kind of power with reasonable cost, sure build it. But don't build the smallest engine you can find that will work, always build the largest.