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Subject: "RE: Introducing my Project"

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DR1665	Jan-25-07 06:36 AM
Donating 2GNT member 14692 posts,

#962, "RE: Introducing my Project"
In response to In response to 26
Jan-25-07 06:54 AM by DR1665

Originally posted by Blizare
Your going to be very disappointed in those pistons, I guaranfuckintee it.

I have to agree with Blizzo this time around. You look like you've got a lot of fabrication experience and that will serve you well, but why spend $1000 on dyno tuning? Holy shiite, man. Allow me to illustrate:

Your plan:
$1000
-extensive dyno time on stock bottom end
You get a couple extra pounds out of that snail and make a bit more power than those who did not invest so heavily in tuning. You're still on fragile, cast internals - only now you're running the car right up on the very edge of that blade. One wrong move, one boost spike, and the engine is toast, bro.

OUR plan:
$1000
-Forged pistons. <$500
-Megasquirt'n'Spark. <$500
You save money by getting keeping the stock connecting rods, but you upgrade the weakest link in the system - the brittle-ass ring lands on those cast pistons. You are still more prone to bend a rod, but you can throw more boost at those pistons before you're at risk to do so.

On top of that, you've got the community standard tuning instrument which allows complete control of both fuel and spark (AND water/alky injection) - which you can not get anywhere else for less than a grand. This community has a solid base of experienced professionals who are using MSnS to tune their own cars.

If you roll into a dyno shop with a SFMU and an SAFC with a boosted engine on completely stock internals, chances are good they're going to be able to tune you okay, but these cars don't have the adjustability to really do a good tune without the proper electronics installed.

Suppose you stuck to your guns and spent all that money on the dyno. They can adjust your cam gears and maybe play around with your fuel pressure or even an SAFC to lean things out (it won't add fuel on our cars). It's going to be tricky, at best.

Suppose you put in forged pistons and invest in MSnS. Now you can do a lot of the tuning yourself. You can adjust your fuel trims to be right where you want them (a couple hundred dollars more will have you sporting onboard wideband O2). You can advance your ignition timing lower in the rpms to help you spool the turbo, then gradually retard to hold that boost out to redline. In the meantime, MSnS is watching your IATs, EGTs, and TPS to determine when to activate your water injection system on the fly. If you could put 10-12psi to the stock pistons, now you're putting the wood to those rods, but you can go further with the engine in terms of boost and horsepower before you bend something. Are you going to get 400whp out of the stock rods? Haha. I highly doubt it, but you'll go farther on forged pistons/stock rods than stock pistons and rods.

I think spending $1000 on dyno tuning a car which does not have the mods needed for proper tuning is just giving a grand to the shop. Now, while you've got a lot of it apart, is the time to stop and re-think the game plan. It's obvious you've got a smart head on your shoulders, but you could just go SO much farther if you just swapped out those stock pistons.

That's my .o2

EDIT:
Blizzo and I agreeing again. Who woulda thunkit.

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