I don't understand how it is custom tuning when you don't have a dyno or air / fuel ratio numbers to look at. I mean all these tuners can really do is give you a more aggressive (canned tune) because without an actual dyno readout, or A/F numbers there can't really be a a way to optimize your tune except for seat of the pants testing. Now I am not bashing anyones tunes and I am sure they are pretty good, but how much better can they be if they were tuned on a dyno?

Just a curious question, still thinking about making the plunge.

Thanks,

Mike

 

It's been bashed and discussed on here before. I think that the consensus is that there are different levels of customization, with a full and most accurate being done on a dyno.

 

Because canned tunes are universal. They work for cars x, x, and x... across the board (or whatever vehicles they are listed for)

E-mail custom tunes are usually set for your truck + mods (intake, exhaust, MAF, ect.). If you took these custom tunes and used them on a different vehicle... chances are bad things will happen.

Dyno tunes are the top... pricey, but will get every little extra bit of HP out of your vehicle.

There are numerous people here that have gone from canned to custom (email custom), and I'm sure they'll post with the experience they've had (its a pretty big difference)

 

I am sure that the emailed tunes are better and more aggressive than canned tuning. But what you are buying is leaving something on the table, and from my experiance with modded vehicles, the more mods, the more you end up leaving on the table. I have a tune similar to what these guys offer on my other car a heavily modded 98 grand cherokee with about 420hp and I can tell you that a real custom tune using a data logger and / or a dyno will provide you extra power and better results.

 

It is a big difference between canned and 'custom' from my experience. It's a small difference (seat of pants) between custom and dyno custom (as long as mostly stock). As mentioned they may be able to squeeze a little more power out (safely) on the dyno. I have dyno and emailed tunes from Troyer (as well as emailed from VMP) and the dyno really didn't make a huge difference in felt power. It was nice though to know I was running safe with a really big intake.

 

Tuning specialists like Mike Troyer do R&D on different intakes to get the A/F ratios that the aftermarket intake will produce on a stock motor, then tune for it accordingly. They use this information along with your truck's strategy code to dial in the A/F ratios without a dyno.

 

Let's say you want to convert your truck to E-85, so you get your tuner to write you a tune for it. That is a custom tune. No, you didn't ride a dyno, but it is custom, because you called him up, and he wrote the tune especially for you.

 

I like both shaunakadub's and chester8420's responses.

In my opinion, they answered your question on the nose!

- Jack

 

with fine tuning on the dyno-,you may get a tad more peak tq and hp,i'd say the difference noticed would be in the throttle responce to the driver,and possibly safer air fuel numbers from the air -fuel readings,seen several mail order tunes -put on the dyno and the numbers barely rose...my .02$

 

By dyno, do you mean a dynojet or a mustang dyno? They two are very different dynos and you still don't get the best tune from one or the other.