Hello, Good morning, and Welcome!

What I'll do is list yer stuff, with my humble recommendations.

Caveat - in ALL cases, a detailed consult with yer yer chosen Custom tuner feller is THE Single Most Important Recommmendation I can give y'all

OK - here we go ...


> magnaflow cat back - No tuning changes - very little gains

> airaid intake - Highly recommended - possible MAF TF concerns

> troyer electric fans - No tuning changes

> underdrive pulleys - Any handheld can adjust the idle rpms as required

> 60,000 volt coil on plugs - No. Waste of money on stock truck - OEM is fine ( Quintin, Gawd bless him, says the stock ignition will about ignite water, lol)

> LT pacesetter headers - Yes. Will change O2 locations - resulting in potential oxygen transport delays.

> 75mm throttle body - Yes. But also a waste of money on a stock truck. OEM is just fine.


Additional Caveats:

SCT X3 SF canned tuners, and Edge Evolutions can both emerge from their respective chrysalides as full-on custom devices.

Also - I would be remiss if I did not add: The newer Diablo products appear to have some very promising advanced capabilites in the 'Canned' realm you may wish to explore at yer leisure. The Gentleman's name is Mike.

I hope this helps just a wee bit - I am just an old Canuckian redneck hillybilly with too much invested in camo and a vastly oversized beer fridge, lol. So - I would also wait for several more folks to pop in & further discuss this. Always nice to get mutliple perspectives - but a fundamental fact remains - most canned tuners do not allow the degree of access, granularity of control, or data capture required to accommodate more than very minor, basic changes to these trucks.

Regards & Cheers! Have a great day, sir!


MGD v4.2

 

Nice job MGD!

 

I agree, nicely put, MGD. Would it be all right with you if I included these thoughts in the "Questions About Tunes" sticky?

And, I think "true dual" exhaust mods call for a custom tune too, or am I totally wrong here?

Any other mods anyone can think of that suggest custom tuning besides a blower?

- Jack

 

Dual exhaust should not require any additional tuning changes...

Ported heads, cams, strokers for sure....

Every CAI will require specific changes to the MAF curve as well.

 

Hello!

Thanks Eighty-Eight & Jack.

(BTW - Did you know that "88", no quotes, fails the profanity filter? lol)

Jack - of course you may, if you think it's appropriate. No need to ask, but I do appreciate it nontheless.

Thanks for the input as well, Mike.

Cheers folks!


MGD v4.2

 

Mike, I was thinking of exhaust mods that reduce the backpressure significantly. Not just "cat back" mods. Am I missing something here?

Edit: I'm no authority on exhaust systems at all. 88racing, I think you've talked about mods in this area that DO require a tune, correct?

Thanks, MGD, I suspected as much, but it doesn't hurt to ask, does it?

- Jack

 

Jack,
Darrenws6 "the exhaust emperor" would or could better explain the trudual effect.
But from what I have gathered for a 5.4 3V is that anytime the "y" is taken out of service and truduals have replaced it. Either seperated or joined by a "x" or "H" pipe the scavenging effect can be comprimised and thus low end torque could suffer a little loss. Not much but a little.
Then you can add the larger pipe than stock into the recipe for losing low end torque also.

But for the OP 4.6 2V IDK

From what I have read of Bill's old info is that custom tunes help get that little bit back.

Modular motors are not pushrod motors and they are a lot more finicky about what's done to them in both input and output.

Yep I know I circumvent the language filter Bluejay has already told me!

Have a great day!

Peace

 

Thanks, Eighty-eight! It certainly makes sense that "opening" that flow path by removing the "Y" is going to change the backpressure significantly. The join of the "Y" is a natural choke point to my "untrained" eye.

In addition, the driver's side cylinders see a significantly longer and more "convoluted" exhaust path than the passenger side. It certainly doesn't seem to be "tuned" in any way to prevent interference effects. Whereas, an "X" or "H" cross design would clearly "even up" both banks.

Again, I know the science of exhaust tuning is VERY complicated and not just something that 'looks good" that you throw on. So, I may be making a big deal out of nothing, but my gut tells me otherwise.

- Jack

 

- Turbochargers

- Nitrous Oxide Injection (especially over 50 HP, need to reduce ignition timing 2-3 degrees per 50-75 horsepower.)

- Stroker Crankshafts (possibly with 4.6 to 5.0 stroker crank kit)

- Camshaft changes

That is all I can think of right now.

 

This place really lets me know how little i know! Gosh i was probably gonna waste a buck or two... thanks MGDfan, and members.

 

Don't read something into this that isn't there! I'm asking what kind of mods would REQUIRE custom tuning to either:A well-designed, custom tune will improve ANY powertrain's operation though. It CAN make the powertrain more reliable, and improve its longevity. It can certainly make the powertrain perform the way YOU want it to, and not the way some Ford engineer imagines some dear sweet little old Granny wants it to.

Notice my emphasis on "well-designed". This means you don't really want some unknown "Bubba" tuning your truck. A competent tuner has paid his dues through lots of experience and a big following among the people who have received his tunes. Competent tuners have very few customers who fault them and those that do tend to be pretty vague in describing what went wrong (meaning they often misuse their tune). Competent tuners also are not afraid to admit their mistakes (since everyone can make one) and they do everything they can to satisfy their customers.

So, I have custom tunes on an essentially "stock" truck and I would not want to be without them.

Oh, and DVMSTX, we're ALL "students" here, learning from each other. This is why the forum is so valuable.

- Jack

 

no i wont help and i don't have a 4.6 F150 or an Edge Tuner either so i cant comment on it

 

I have a 98 4.6 sas on 38x13.50 toyos with a flash tuned ecu by altitude and get about 20mpg and can run 120 down the road

 

You know you just replied to a thread that's been dead for 5 years?