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Old 07-26-2007, 08:12 PM   #1
archrival
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anyone used a piggyback tuner

Interested in hearing if anyone on here has used a piggyback tuner on a 2.8.
I've found a Perfect Power smt6 tuner that allows you to go in with a laptop and minipulate the stock ecu...just wondering if im actually going to get anything beneficial out of this...right now i have a cosmos, exhaust and im getting an m50 intake, also wanting cams in the future...is this worth $300? it comes with software but I am still going to need to take it somewhere that can tune it.
edit also wanting some pulleys and ltw flywheel...not that a tune would change

Input on this please
thanks

Last edited by archrival; 07-26-2007 at 08:28 PM.
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Old 07-26-2007, 08:25 PM   #2
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I wouldn't waste my money on it. You would have a veeeery hard time trying to get any good tune out of that. For that money, you would be much better off going to MarkD and having him tune your ecu, he will actually give you some gains, that smt6 will more than likely just give you some headaches.

If your gonna get cams, just wait till you get the cams and get the cam software, you'll be very pleased with the results. My 328 with m3 cams, m50 manifold, intake, U/D pullies put down 208whp (if I'm not mistaken) when I get home I will try and find the dyno sheet again. Thinair can also testify, he dynoed his 328 with similar #'s
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Old 07-26-2007, 08:29 PM   #3
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how much did you end up paying for cams?
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Old 07-26-2007, 09:30 PM   #4
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talk to Proprone hes done some investigating into this and i think might have a piggyback system for sale
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Old 07-31-2007, 01:21 PM   #5
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you mean like a SAFC-II?
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Old 07-31-2007, 02:32 PM   #6
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uhmm go read BFC's Forced induction section..lots of smt6 on there.

I wouldn't go piggyback/standalone on just an intake & cams..
add some bigger injectors too, maybe alter compression h/g

make it far from stock & management is worth it/required.
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Old 07-31-2007, 05:48 PM   #7
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The problem with piggyback systems is that you can only manipulate variables to the stock range. For instance, if the stock ecu will deliver .001 to 18 lb/hr of fuel per injector, you could get the SAFC-2 or the SMT6 to deliver 20% more fuel than it would normally

(aka at 80% throttle you deliver 16lb/hr of fuel, with the SAFC-2 you can deliver 17.6 lb/hr of fuel, but never over 18).

The numbers in this example are made up. Mark/jimC/nickG/etc can change the range in the ECU, allowing you to deliver 21lb/hr of fuel (where my injectors would max out)
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Old 07-31-2007, 05:50 PM   #8
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The problem with piggyback systems is that you can only manipulate variables to the stock range. For instance, if the stock ecu will deliver .001 to 18 lb/hr of fuel per injector, you could get the SAFC-2 or the SMT6 to deliver 20% more fuel than it would normally

(aka at 80% throttle you deliver 16lb/hr of fuel, with the SAFC-2 you can deliver 17.6 lb/hr of fuel, but never over 18).

The numbers in this example are made up. Mark/jimC/nickG/etc can change the range in the ECU, allowing you to deliver 21lb/hr of fuel (where my injectors would max out)
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Cold: 2002 TiAg M3 6mt ZCP 19's michelin supersports, deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 18's w310's,
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