I am in the process of going to e85 and am installing FIC 1450cc Blue Max injectors.

In the past, for other injectors, I used the 14.06v latency value as input into the Start IPW latency mcsec table. In stock form these values match exactly.

Upon setting up the scaling of the 1450s I went to input my 14.06v value into the Start IPW to discover that the maximum limit of the Start IPW is 1020. The value I wanted to put in is 1152.

The goal here is to keep the car as close to stock characteristics as possible when starting.

Anyone know what is going on here????

Paul

 

50+ views and no one has any response ? ? ?

 

Paul, I've never used this since mrFred posted it did not do anything. Has his findings changed since?

 

dumb question I know, but are you hitting = then typing in the number you wish to enter?

 

I had the same issue, and I asked about it in the v7 thread and no one answered. I ended up putting the value back to the stock one, and it didn't have any affect really.

I am having a hard time starting warm with e85 and the 1450s. I have the start up ipw set at .1 in the upper values as well, and it still takes about 5 seconds of cranking with the pedal almost floored to start it.

Cold starts and starts where it is slightly warm are great though.

-Will

 

Paul, I do not also think it will change the start injector PW according to mrfred's advanced fuel control option post.

My friend at Hyundai R&D center told me that start up injector pulse width calibration is tricky, because "flow rate" of the injector is not the only one factor that affects the "net fuel amount" ending up inside the cylinder. He said other variables like injector spray pattern, relative position to the intake manifold can also affect determining the right pulse width.

Scaling injector pulse width relative to stock injector size can be a good starting point, but we have to do many testings to get it right.

I have Sard 700cc injectors (with 93 octane gas), and my warm start takes about 1 second, but it is not as clean as stock. It seems it is not easy to make it perfect, because if I use smaller number (like 2 ms), it starts very clean when I start the engine again right after shutting off, but if the engine stays off for about half an hour, it does not start at first time.

So I am using 2.7 ms now, and it starts ok in both conditions.

I guess it would be harder when E85 is used.

 

Thanks for the replies.

I've been tinkering with the value....it seems like the car does like having a higher value rather than a smaller one. With my old injectors, I set the msec to match my 14.06v value...the car started instantly every time.

With the 1450s, I tried to match the 14.06 value....but it won't happen....It appears that the car hesitates more to start....takes more revs of the starter to get it going.

 

Just for reference, 04 JDM Ralliart has different injector latency value (0.480 ms @ 14.06V), and it has the same value (4C in hex8 format) at 1561 address as USDM 9417015.

 

So this "Start IPW" is there for no reason at all?

It does affect start up when it is adjusted to be closer to what is seen in the Latency voltage.

 

Oh, really? mrfred said that address is never called at EVO 8 & 9.

I think start up voltage is usually around or below 12V, so latency at 14V might not help much, I mean theoretically.

 

any more info?

 

I raised the IPW start to 800....the car seems to like it. Could be placebo...I really cannot tell for sure.

 

Whats your starting chart look like against coolant temps?

 

Which table exactly are you looking for???

 

Your talking about the cranking enrichment adder table right or whatever its called on your rom?