Is only having a new tune worth it?

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.

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?

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

CobraBob said:

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?

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Truck is bone stock.

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.

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.

Thanks for all the good info!

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.