I've heard the reflash can accomodate more changes and such than a "chip" program. Exactly how does a "reflash" work? The predator reflashes with a new set of parameters... how is this different than an ECU reflash from the vendors that do it?

For instance, base timing is SET. Stock is 12, right? It then changes based on temp and engine operating parameters. That stock 12 isn't changing.

How would an ECU relash know to pull timing to say 11 if the motor had a ton of boost? I would assume a reflash would have to set the base to 11 and let the computer do it's normal fluctations due to temp, rpms, etc.

So I guess my question is, if you had a dyno tuned custom predator program that was loaded onto your computer, what is the difference in that and a "reflash" that the vendors are performing on the computer?

 

From my understanding, current one bank chips use the fuel tables for tuning. Therefore when the weather changes and timing changes, the chip cannot sense it and has to be reburnt.

It is my understanding that the SCT 4 bank tuner tunes off the mass air system. The MAF can sense how much are and how dense the air is. Density is proportional to lower temps, so the flash from the SCT can compensate like and ECU reflash for the weather.

Don't know much about the Predator per se...

 

what happens when you peg your maf

 

not good things?

 

Takes a lot of HP to peg the MAF!

 

Not as much as you may think.


Rocks

 

In a nut shell.....your computer will loose control of A/F and timing.

The way I understand it....the computer will go to a "emergency" set of fuel tables........but there is no real control of the system when this happens.


Rocks

 

My question still stands, though...

what is the difference between a flashed ecu and a predator burn?

 

The predator in MO - is an exspensive device that allows you to try different tunes. You can adjust timing yourself; can't remember if there is anything else you can adjust. Then there is cost of different tunes depending on who you go through, or free ones. It's a chip without the chip. A reflash does all those things for you because its adaptive.

I think it will be pretty neat once motors will stop being blown and all the bugs get worked out...but I think SuperChips makes something alot better now. Some people's needs are different for tunes , I prefer a reflash.

 

Ken when we are talking about comparing a reflash to a Predator or even SCT, they are the same. If we are talking old chips the answer is the new technology allows you to access more tables than previous chips.

 

exactly... I'm talking about the new chips/predator that can address all four banks.

There is no way a computer reflash can "adapt" to timing changes as those are set. The 4 bank chips have table values that can be filled in as far out as need be so I have to assume a newer generation 4 bank chip is more or less the same as a reflash.

How is it that everyone talks about the "reflash" being more adaptive than a chip? If you have a 2lb and put a 6lb lower on, you definitely want to pull a little timing. The reflash isn't going to do that automatically. If the reflashes are, in fact, reacting to the new needs for a/f, how is that possible? The tables for WOT are based on known conditions. If you reach X on the MAF, deliver Y fuel. Period. How could a reflash be any more "smart" or "adaptable" than a well tuned chip? At partial throttle, they computer uses 02 sensors to hunt for 14.7:1. Chips and reflashes both will use this method...

 

And how much is that?

 

while we're at it... does anyone know the limit of the 80mm MAF..or the 85mm?

 

I am pegging 5 volts with mine as of yesterday. I made 485 RWH on that dyno run. The boost was around 16lbs(kennebell) when it started hitting 5 volts. Engine speed was at 4870 RPM.

I am just learning about the MAF issues...but I am thinking it has to do more with the CFM of air you are pumping through it than H.P. The H.P. is just a by-product of the larger amount of boost.

The next pull I made roughly 525 H.P. and it pegged right at 5200 on that run. Boost was around 18 this time.

The tune is still being worked on....I hope it can be corrected in the tuning.


Rocks