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Djfourmonie Djfourmonie is offline
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Default Dyno Results Map 4 + Datalog - 09-01-2020, 11:02 PM

I thought the app would automatically log when WOT was hit but apparently that wasn't working so all I have is results and tailpipe AFR reading.

I did not use E85, but something else and for now I won't discuss what I did.

Church Automotive Testing Dynapack Hub Dyno -

Modifications - JB4

251 whp @5458

268 ft. of torque @3670

Peak 29.9 whp over Map 1 which is very knock limited, I'll get to that in a second.

Torque from 3200-4500 rpm stayed above 260 ft. of torque.

I wanted Terry to check out 3rd gear I just pulled coming home.

The dyno operator seemed concerned with the air-fuel/lambda reading with his tailpipe sniffer. Looking at the log myself, it doesn't seem to be a concern to me.



I ran this on Map 3 as well. Less boost taper with Map 4 actually filled in a small area that was a dip around 5800-6000 rpm, so Map 5 might should make even more power.

Heat soak was becoming an issue as well.

I wanted some feedback on this before moving up to Map 5.

It should make good power with WMI enabled as well, given the heat soak (1) and that inlet temps where in the 120-125 degree range though I don't have the logs to prove it.

Overall I am excited and I do want to run the car down the drag strip but earnings this week have been slow and the dyno cost me $200 because I was on it for an hour and made lots of pulls.

Race Week starts Sept 13th with tech inspection that runs from 7 am to 3 pm.
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File Type: csv JB4 Mobile Logs (4AC4LE161669) (1).csv (20.2 KB, 103 views)
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Lil Ripper Lil Ripper is offline
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Default 09-02-2020, 04:08 AM

Decent numbers! I was looking at booking an hour on the dyno at the end of the month... Until I pulled into 4th gear last night too pass a semi (Map3) and my clutch slipped between 3500-4000. Thought maybe it was a glitch but it wasn't. It does it every time. So I am trying to find a better clutch or have the dealer put a new one in.
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Djfourmonie Djfourmonie is offline
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Default 09-02-2020, 06:50 AM

Really? That's a bit of concern, your car is manual or DCT?

Oh I forgot to mention, it made 234 hp on Map 1.

I am thinking about jumping on a Dynojet since that's what most use as a reference, but I already spent $120 more than I thought I was going to.

The closest Dynojet is $100 for power check. The other affordable one is 45-50 miles away, $80 for a power check.

That said I would have to run at least one full tank of 91 to ensure most of the fuel I blended with it is out of the fuel system to get a reliable Map 1/91 octane reading.

Map 1 made 217 hp which is the same as E20 with the stock tune. I didn't run Map 0, that was based on a previous session on the same dyno.
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Lil Ripper Lil Ripper is offline
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Default 09-02-2020, 07:15 AM

My car is DCT. Its strange that it only feels like it's slipping in 4th between 3500-4000. Data logs show with the pedal at 95 the throttle is pulling back into 50-60 range. Almost as if something is triggering the clutch too release momentarily. Doesn't do it in any other gear. And it's pulling the hardest since I have owned it.

Back to you...234hp is pretty good for map1 no?
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Djfourmonie Djfourmonie is offline
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Default 09-02-2020, 07:48 AM

Quote:
Originally Posted by Lil Ripper
My car is DCT. Its strange that it only feels like it's slipping in 4th between 3500-4000. Data logs show with the pedal at 95 the throttle is pulling back into 50-60 range. Almost as if something is triggering the clutch too release momentarily. Doesn't do it in any other gear. And it's pulling the hardest since I have owned it.

Back to you...234hp is pretty good for map1 no?
DCT's stock clutch will only handle a certain amount of torque.

Tork Motorsports has a video on Facebook about it. One of the KDM specialist, I don't remember which one maybe Blood Type Racing sells an upgraded DCT clutch, it's likely from another car with a higher torque capacity.

That said they were able to run low 13's with their Veloster DCT and other Elantra Sport DCT's have run similar times.

The main reason I got the manual transmission Forte GT is thought I would have DCT problems if I pushed the power higher. I'm fairly sure the Veloster Turbo Rally which is manual trans uses the same size clutch as the Forte5 SX/Forte GT do, so there is a selection of aftermarket clutches from OE style replacements that usually have 30% increased torque capacity, all the way up to Stage 3 Spec and 6 puck ACT clutches that will hold 400+ lbs of torque.

Map 1 on 91 octane only did 217 hp. When I dumped a gallon of the fuel I am using, we did a pull on Map 1 after we let it circulate a little and it belted out 234 hp.

Confirming that Map 1 is knock limited and that better fuels will result in more power.
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Default 09-02-2020, 08:15 AM

Data generally looks OK, I can see more octane/E85 would help power on this map4 as you have a few timing drops.
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Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Djfourmonie Djfourmonie is offline
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Default 09-02-2020, 09:01 AM

Yeah ran it at 8:1 or 7:1 ratio.

The good news that it's still okay and belted out quite a jump in power. I can get it closer to 5:1 ratio and that should fix timing issues. I wanted to run a log or two by you because like I said in FB, the dyno operator was concerned about the lean spikes right at the start of the run.

But I can see in my logs that when I start a pull at 2500 rpm, the lean spike is 13.2 which is nothing to a DI car at that load level. Would be more of a concern at 6000 rpm in 4th, 5th or 6th.

The spikes he saw were 17:1 at the start of the first Map 4 run, but that's from a tailpipe sensor and Kenne-Bell has warned about the accuracy of those sensors.
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Default 09-02-2020, 09:07 AM

On AFR let's see what the dyno chart reports also to reconcile the two.


Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Default 09-03-2020, 01:28 PM

Was this the dyno for this post? It's a little leaner in spool up mode but probably more an artifact of the dyno and tailpipe reading than any tuning issue. Once it's spooled up AFR is right where we set it.
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It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Default 09-04-2020, 12:44 AM

Yep the two highest spikes are the latest. When I go track testing I will go up to 5:1 as recommend by VP, I'll be sending logs on every pass.
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