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Just got the car out of winter storage, everything runs fine but I have a question. In the basic settings of the JB4 app, is the “Shift Boost Red” a new feature?? I don’t remember seeing that before storing the car last November. The current value displayed when connected with the car is 60...

Thanks for the input, really good to know. Heat isn’t a problem up here, might make it easier to dial in lol! Did you test your 1/4 mile time with your setup?

Ok thanks, car is about to get stored for the winter, will probably fit the FP upgrade next spring. I guess it would also help lower the fuel trims because they are a bit on the high side in my logs so far

Hi all! What level of E could I run with the JB4 Fuel Pressure upgrade kit?

Back from the dragstrip, achieved 11.74 on map 2 and 11.64 at 120 mph on map 6. 11.5x definitely achievable with better launch and shift point. Thank you again for all the inputs, amazing thread!

Ok thanks, will do! On my logs, is ecu_psi another name for ecu boost? And is dme_bt another name for ecu_target?

TC was completely off. 3K rpm WGDC is set at 25 in the log, dropping it to 20 might help with the throttle closure?

Man I don’t have any merit, apart from buying E85-R to make ethanol blends to follow advice from the guys on this thread, all the merit is for them! Can’t wait for map 6 feedback from @ColonelAdama, wonder if it needs fine tuning?

So… Map 6! https://datazap.me/u/arthurwick/4th-gear-coloneladama%E2%80%99s-map6?log=0&data=1-4 Pulled really hard but I wonder what the verdict is? Any adjustments needed? Why such a huge throttle cut around 2800 RPM?

Sun’s out again and it dried, time to log map 6!

Map’s saved in the JB4 🫡 But logs will have to wait until tomorrow, just saw that it’s raining like crazy right now!

I’ll have a go, brb

Also, why do I have 2 big throttle closures (3000 rpm WGDC = 36 and 5000 rpm WGDC = 45) on map 2. Do I have to make some WGDC adj to help with this?

Good to know! Would going into map 6 and add 1 psi more boost to let’s say map 2 targets be a good way to test it? Or should I just go with map 4? I don’t plan to run the car with Ethanol blend at all time. I’m trying to find out how much boost I can add safely with this e20-e25 blend for the...

Hi all! E20 blend, 2 new runs Map 1 4th gear https://datazap.me/u/arthurwick/map-1-4th-gear-aa-catted-and-cai?log=0&data=1-4 Map 2 4th gear https://datazap.me/u/arthurwick/map-2-4th-gear?log=0&data=1-4 Did the E20 improved things? Thanks

Will stick to E-25 blend 👍

Thanks for the heads up! I’m getting 5 gallons of Sunoco E85-R today to make e25 blends (did also buy an ethanol tester) . E25 is the max stock fuel system can take I think no? Or would E30 be fine? Have a good one!

Yeah, I’ll just get 94 pump before doing more logs. I just found a shop that can get me 5 gallons of Sunoco E85-R, will use this next year to make E25-30 blends to use for logging map 2 before my occasional trips to the drag strip. Car is about to get stored for the winter, I don’t want any...

Won’t do this every week ! Just to check if timing will be better with supposedly better fuel. For science! 🤣 But yeah map 6 with + 2 psi could do it for now

Thanks for the reply, will fill with pump 94 octane in the weekend before using the JB4 again.