Is only having a new tune worth it?

coild

Boss 351 to SVT Cobra
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Hi guys!
Just wondering if it is possible to have just a better & hotter tune installed without having the crank pulley changed for more boost. Is it worth it? Any idea what the HP/TQ increase would be? 2004, bone stock, 90,000 miles.
 

CobraBob

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I guess it depends on how good your current tune is. If you don't change any bolt-ons, I would not expect a big enough power increase with a new tune to make it pay off. What size upper pulley do you have now?
 

DSG2003Mach1

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If no tune at all and you tune it, it would probably be a decent increase and the trans tuning is always a big plus imho.

if it has a tune on it, unless it's crap a retune on the same fuel would likely net very little
 

coild

Boss 351 to SVT Cobra
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I guess it depends on how good your current tune is. If you don't change any bolt-ons, I would not expect a big enough power increase with a new tune to make it pay off. What size upper pulley do you have now?
Truck is bone stock.
 

CobraBob

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Then most-definitely a tune alone is worth it! You will notice an increase in performance, but is there a reason you might not want to also go with a smaller upper pulley? You're missing out a lot if you keep the stock upper. Example, my '03 Cobra made 385/370 with nothing but a catback and intake. I went with a 2.90 upper, tune and 4-piece idler set and it jumped to 459/480. I still remember the first drive after the install. OMG! HUGE difference. So much so that I didn't want to park it. So, you really should go with a smaller upper with the tune.
 

Dusten

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A good tune will net drivability and trans increases.
I'd recommend a good valve body too. A good valve really makes these trucks drive good.

Nick lowedes had his truck deep in the 12s on stock boost.
 

CobraBob

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Let us know what the results of your tune are for your Lightning, and try to get a baseline dyno run to compare before and after if you get a dyno tune.
 

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