Turbo B20B busting up at 2k

s300 and SManager software questions & answers
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darkrain0660
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Joined: Thu Aug 25, 2016 4:35 pm

Turbo B20B busting up at 2k

Post by darkrain0660 »

Hey guys. Just picked up this car in a trade and the guy said he attempted a "safe" tune to get him by until dyno time. Well apparently that time never came around for this poor car. Car has B20b non-vtec, Hondata S300, ebay turbo kit, 440 inj, Walb 255 fuel pump, omipower 4bar map, skunk2 intake manifold and stock internals ( head included). He claims its on 6 psi but the boost controller feature isnt even enabled in the parameters and there is no boost controller so...ummm...yeah that. The main problem so far is it cuts in and out really bad around 2k and falls flat and jerky like it wants to cut off but then pulls hard after 3000rpm like it should. The cut out happens in every gear between 2000rpm - 2800rpm. Can anybody take a look at this short data log and see if you can help me make a few adjustments so i can get this thing to a dyno please. Any help would be greatly appreciated.
darkrain0660
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Re: Turbo B20B busting up at 2k

Post by darkrain0660 »

1st Data Log 2 Revs.s3d
Car parked and Reved up 2 times
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darkrain0660
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Re: Turbo B20B busting up at 2k

Post by darkrain0660 »

Turbo B20 S300 Calibration.skl
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Hondata
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Re: Turbo B20B busting up at 2k

Post by Hondata »

TPS needs to be adjusted.
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3gdean
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Re: Turbo B20B busting up at 2k

Post by 3gdean »

throttle position sensor @ 0% when revved.

brake in wire, not the correct plug for sensor, i have mixed up the tps with intake temp sensor before
darkrain0660
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Re: Turbo B20B busting up at 2k

Post by darkrain0660 »

Sorry been at work all day. Thanks for the replies I'll try recalibrating the tps and see if the correct wires are hooked up when I get off after 5.
darkrain0660
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Re: Turbo B20B busting up at 2k

Post by darkrain0660 »

Ok so used a multimeter to test all three pins on the tps. Got 5V, 0.02 (signal wire) and 0.03. Plugged it in, turn the key to the on position without starting it. Back probed the signal wire and slowly opened the throttle. At WOT it was only getting 3.87 volts. It's my understanding that it should get the entire 5 volts when opened all the way or is my understanding incorrect?
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Hondata
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Re: Turbo B20B busting up at 2k

Post by Hondata »

It should be 0.5V closed and 4.5V at full throttle. From the datalog I'm seeing the throttle staying at 0% when the engine is revving up, so it must be out of adjustment or faulty.
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Budget Racing
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Re: Turbo B20B busting up at 2k

Post by Budget Racing »

can u post a calibration of this tune? i have similar build need a tune to get it moving!
Jun43
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Re: Turbo B20B busting up at 2k

Post by Jun43 »

Budget Racing wrote: Tue Jul 18, 2017 10:26 am can u post a calibration of this tune? i have similar build need a tune to get it moving!
look at the 3rd post
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Re: Turbo B20B busting up at 2k

Post by Budget Racing »

unfortunately this tune my car wont even idle! i got a b20b t70 ebay t3 turbo 8psi wastegate(spring) and 440cc TRE injectors and stock map sensor! trying to find a tune to get my car making some safe boost thats why i went with hondata but i cant find anything on how to tune or make a basemap anywheres! no local tuners where i live neither so if anybody could do me up a calibration or anything would be amazing!! thanks
Jun43
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Re: Turbo B20B busting up at 2k

Post by Jun43 »

Budget Racing wrote: Tue Jul 18, 2017 1:10 pm unfortunately this tune my car wont even idle! i got a b20b t70 ebay t3 turbo 8psi wastegate(spring) and 440cc TRE injectors and stock map sensor! trying to find a tune to get my car making some safe boost thats why i went with hondata but i cant find anything on how to tune or make a basemap anywheres! no local tuners where i live neither so if anybody could do me up a calibration or anything would be amazing!! thanks
the calibration is on a 4bar map sensor and you are on a factory 1.8bar map sensor. you will need to set the deadtime on your injector too. look in the calibration section or check out a etuner like vit tuning
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