Whipple Calibration On Hold

[Q6543]

That makes zero sense, the whole point of E30 is the alcohol burns like 500 degrees cooler than 93 octane… that’s where the power and spark tolerance comes from.

@Billycar11

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[needforspeedirl]

Good to know there is a theory out there if people use e30 it kills them fast as the 55lb injectors have enough to be safe the engine but not enough for cat over temp protection enrichment so they melt

What theory? The only thing that would cause the converters to become too hot is too much fuel in the A/F ratio. That goes for e30 and 93 gasoline. A bad tune is usually the culprit to failed cats. Not saying you can’t overheat the S650 cats with FI and the ford tuning but you would really need to be pushing the car hard for an extended amount of time for that to happen.

 

[Billycar11]

What theory? The only thing that would cause the converters to become too hot is too much fuel in the A/F ratio. That goes for e30 and 93 gasoline. A bad tune is usually the culprit to failed cats. Not saying you can’t overheat the S650 cats with FI and the ford tuning but you would really need to be pushing the car hard for an extended amount of time for that to happen.

dont think so cot protection purposely dumps more fuel in to cool the cats at wot
leaner is hotter
richer is cooler
yes cats heat up from fuel but more heat is coming from combustion at wot with boost that cooks them extra fuel is needed to cool them

 

[needforspeedirl]

dont think so cot protection purposely dumps more fuel in to cool the cats at wot
leaner is hotter
richer is cooler
yes cats heat up from fuel but more heat is coming from combustion at wot with boost that cooks them extra fuel is needed to cool them

dont think so cot protection purposely dumps more fuel in to cool the cats at wot
leaner is hotter
richer is cooler
yes cats heat up from fuel but more heat is coming from combustion at wot with boost that cooks them extra fuel is needed to cool them

Don’t think so…..unburned fuel from a rich A/F ratio causes unburned fuel to reach the cats where it then is burned and creates more heat inside the cats since the combustion is occurring outside the cylinders. This is why they don’t recommend pops and burbles on cars with cats. You are correct that lean equals more heat but that’s only for the cylinder walls and pistons.

 

[robvas]

Don’t think so…..unburned fuel from a rich A/F ratio causes unburned fuel to reach the cats where it then is burned and creates more heat inside the cats since the combustion is occurring outside the cylinders.

When the cat overtemp kicks in riches things up to around .70 lambda (at least on the GM's)

 

[Billycar11]

Don’t think so…..unburned fuel from a rich A/F ratio causes unburned fuel to reach the cats where it then is burned and creates more heat inside the cats since the combustion is occurring outside the cylinders. This is why they don’t recommend pops and burbles on cars with cats. You are correct that lean equals more heat but that’s only for the cylinder walls and pistons.

i guess ford and gm dont know what they are doing then... why does cotp make it run richer at wot
because it cools them down

 

[Zig]

i guess ford and gm dont know what they are doing then... why does cotp make it run richer at wot
because it cools them down

They just need a bypass.

 

[Q6543]

It’s about richer in decel post WOT… that’s the COTP bs

 

[Zig]

It’s about richer in decel post WOT… that’s the COTP bs

If you can’t see through them they’re too small, upon going (imo) boosted the cats are of secondary concern, as in limited quantity specific exemption type of thing, but for some reason I don’t think they think that. Either find an exemption or the most open largest honeycomb smallest size possible that you can see through and lets the light (sel) clear. But again if that’s the reason for the ford hold i wonder if another tune/option will become available from whipple.

 

[ZXMustang]

DFCO cuts fuel at tip out over 2800rpm. That lean spike super heats cats and isn’t something you want after a heavy pull. Cat over temp enriches fueling to cool the cats. It’s bad for cylinder walls because it can wash them down. Cat over temp isn’t going to hurt the cats but it could hurt the cylinder walls. The best case scenario is to disable or lessen cat over temp and disable DFCO so fuel continues to be burned and control temps rather than allowing a lean spike at tip out. It’s better all around except for mpg. My tunes are set up for a lot less COT unless there are no cats, and DFCO disabled unless the driver needs that extra engine braking. This is safest and most consistent fueling and temp control for both the engine and exhaust/cats.

 

[ZXMustang]

It’s about richer in decel post WOT… that’s the COTP bs

No that’s not. COT is only for enrichment at WOT. Or happens to be when cats temps are at their peak. 1600* + inferred

 

[ZXMustang]

Oh and e30 is preferable over e10 gas even with the stock whipple cal. Youll get a bit extra knock protection as well as a bit extra cooling from the extra ethanol. It makes a tremendous difference in knock protection. The car will use the fuel trims to add the extra 5-10% fuel volume needed to maintain stoich and commanded enrichment as needed. I just did an s650 whipple tune for a guy with a stage 2 for e30. Car took 2 more degrees and we were able to lean it out a tad over the stock Whipple parameters and it was very happy. No KR and have much cleaner logged pulls.

 

[Billycar11]

No that’s not. COT is only for enrichment at WOT. Or happens to be when cats temps are at their peak. 1600* + inferred

nice some backup
not sure why people were disagreeing but yeah seen it in the tune
and you can see it in the wide bands in the dash

 

[mustangpilot135]

Well with all of that said. It's now the middle of October, any word from Ford Motorsports as to the tune?

 

[quadzila]

Yes , I sent these questions to them today: " Its mid October, could I get status for the calibration? also will the advertised HP and torque be the same with the new calibration? "

they responded:

Our latest is still mid-October, that being said, that time frame is fast approaching. I anticipate an update from engineering very soon. Once I hear from the engineering team I will let you know.

From my understanding there will be no change to the performance of the kit with the updated/validated tune.

Thank You,

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