Quote:
Originally Posted by HemiCharger
True on the idle issue and I would have gone JWT had I not found a Power FC for like 800 bucks delivered. I think now they run in the 1200-1300 dollar range. I have never had any problems with it so far. I can get around 25 mpg and have it tuned conservatively for 400 crank horse power. I just wish the sr transmission was as good as the engines then they would be the BOMB even more.
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That's a good deal for sure, but remember we're all making 400 to the rear tire
That's a big difference for sure.
And I can totally hear ya - I too wish the transmissions were better. Not so bad for daily/street driving, but even on track cars it's very hard on them.
Quote:
Originally Posted by jspaeth
To be fair, though, Cody, can you find another PFC user with the same setup (same cams, extrude honed/swained mani and turbine housing)?
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For sure, and this was probably me jumping the gun a bit. In the same regard though, I doubt we'll see many as those who are content with sub 400 hp cars (like me) are often easily fans of the ROM tunes as they work.
You can bet however that if I was building big HP car, I'd have a standalone of sorts (and would have forced myself to learn how to tune it)
Quote:
Originally Posted by jspaeth
Needless to say, I think the biggest difference in why all of your cars put down that extra 20-30 ft-lbs between 4500-7000 and the resulting increase in horsepower is due to
1) The swaining/extrude honing
2) Having a tune done by an expert with a LOT of research done into the timing/fuel for this particular setup.
I am making a similar torque curve as these cars, minus about 20-30 ft-lbs across the board.
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I'll agree to that as well, but I also like to think that the Cams are another major reason for this. A tubular manifold car (which most 2871r guys use) should easily make more Peak HP simply due to manifold design (when compared to the stock setup) but even they aren't seeing the power they should.
And in regard to a professional, remember the JWT isn't a reflash, and the Enthalpy simply has a cam program added. I wouldn't say these are any different than what anyone else can buy.
I also do not build these motors loose - I want them to last. If it was an Enduro car I could care less, not a car that needs to be daily reliable (heck he's got nearly 8k on the motor already, i have 20k)
Quote:
Originally Posted by jspaeth
I am not saying it is EASY or CHEAP to have that setup, but I just don't think that the "big secret" is in the ROM tune.
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I agree, but my main objective was to present to the 240 world, how 'well tuned' these ROM setups are in this day and age, and how they will work great for 90% of the cars out there. Nothing boggles my mind more than kids still using SAFC with their DET computers ya know? Heck used JWT/Enthalpy ECU go for 300 bucks...it's a steal!
Quote:
Originally Posted by jspaeth
That ROM tune surely has seen multiple iterations (at least on your car) of datalogging and refinement to get a timing/fuel map that works so well with your cams/setup
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To a point: My car is only on tis' 2nd retune...it made the same power, but gained 15 ft lbs with the retune (and also gained the cam program) His JWT ECU is on the initial/base setup.
(I will be getting the chips soon for a 'meth map' hopefully can increase the boost a bit
)
My main objective of this was to show that with the right parts (nothing exotic) that good solid power can be made with either ECU -- that's it.