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Howard Coleman

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Howard Coleman last won the day on October 22 2021

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  1. how do I start adding a new base map on my g4x e36 m50 

  2. i will be running the Texas Mile March 22. i hope to finish at 7000 rpm in 6th gear/200 mph. i did attempt this a number of years ago and was running just over 160 a bit before the 3/8th mile marker when my fuel pump fuse melted. a week prior i ran 330 KM/Hr-205 on the dyno. at the time i had a T56 which had the .5 6th so i was running in 5th at 8650. i now have a Magnum F with a really nice 6th. the finish line, for my Mazda RX7 running around 575/600 rwhp, is 30 seconds from start. that's lots of time for my 2 rotor to be running near the 600 level. there is a very interesting lengthy post by someone working for Cadillac that tuned the Northstar engine. he programmed in various changes in the map if the engine had been running flat out for X amount of time. i like the idea for my needs. when i did run the Mile previously i had boost by gear enabled so i ran off the spring in first and second and then curved into 27 psi (GT4094r) as i moved towards higher gears. i have a ViPEC log of the 205 dyno run. we ran thru 5 gears and of course i know it isn't the real thing but it was a start. all the engine metrics were fine at 9 degrees advance, 27 psi and 77% ethanol. i will be using 6th this March. what would be my options and how would i enable..... as to timing, AFR and boost give my G4X Extreme? i am primarily interested in what if anything i could do in 6th. thanks for any help.
  3. does the RX7 S6 plug in have a math channel? thanks
  4. Howard Coleman

    USB Cable

    last year at the PRI i asked Link to offer their connection cable with the newer USB-C. last week at the PRI i again made the request... received sort of a shrug. maybe requesting it here might get some movement. as time goes by we find ourselves with updated laptops which do not have the older USB ports. i use a Microsoft Surface as a dash and logger in my car and later transfer my logs to a Dell Inspiron laptop. neither have the older USB port. in order to use the Link cable i have to use an adapter which creates a dicey connection in the car as i pull a G or so. i don't want to lose a log... please offer a modern connection cable.
  5. FWIW, i had my Link Knock Ears on and didn't hear anything unusual.
  6. Thanks Adam and Kris. i will reset timing a bit and that may supply an answer
  7. have you seen a significantly higher knock reading that was one data point that was knock? all my V88 real knock had other surrounding knock data points. i will be doing a similar run w a touch less timing
  8. Howard Coleman

    Knock?

    i ran one of my best 3rd gear pulls yesterday. approx 530 rwhp at only 15.8 psi. two rotor with a Garrett G40-1150. all my metrics were great... 80 F IAT measured with a thermocouple, mid 1500 F EGTs etc. my G4X Extreme was measuring knock around 50-80. (Gain at 1) 68% 93 octane pump, 32% ethanol along with 1400 CC of 100% methanol as AI. knock was normal except for two data points. at 6:23.604 i recorded 236. knock before the data point was 31 and after 22. at 6:24.925 i recorded 389. previous was 29 and following was 41 AFR, EGT, IAT, Exhaust manifold pressure, fuel pressure and AI pressure showed zero impact from these two data points. AFR was 11.2 during the 236 and 10.42 during the 389. i am especially concerned as to these two data points because in March of last year i had a similar one data point of knock that registered 1178. adjoining readings were around 60. same RPM area and the same front rotor. 24 PSI, 37% TPS, 9.72 AFR, 9.4 IGL around 500 rwhp. given all the metrics were fine there was a thought proffered that the knock reading could have been my front iron breaking. (due to an issue with the thru bolts.) i also had my Link Knock ears on and heard nothing amiss. i successfully ran my V88 for 10 years with essentially the same setup and never had a single data point knock reading. i have a log where i had bad gas and it showed a series of knock readings... as i would expect. i realise the G4X knock system is more advanced than the V88. is this one data point outlier knock reading a normal generation for the G4X? can this be knock? map: https://drive.google.com/file/d/1vaIbH-YN69ffDT8lRhaldydv0BAaDw2C/view?usp=sharing log: https://drive.google.com/file/d/1zHrgH0DV6K8CdOcXBYu1zpAXQUNCXlo_/view?usp=sharing thank you
  9. i should have entitled my post, "How not to wire a fuel pump." thanks Adam for posting the most fundamental diagram. it has been ten years since i wired my V88 and i had forgotten that the ECU presents GROUND to the signal wire not V. after playing w numerous relays etc in desperation i revisited your post and actually looked carefully at it. all is super well w my Radium surge tank install now. tieing in to the original fuel pump signal wire for the lift pump appears to work well.
  10. i have completed my install of the Radium fuel tank sump which requires wiring in a second lift pump. i decided to tie into the B Plug Ign 7 wire for my lift pump as it was providing the signal to my primary fuel pump relay. i would have preferred to tie into another pin, as you suggested, but decided i wouldn't have been able to set up the proper commands such as the Pre Crank Prime etc. the motor starts and seems to run fine... just for a brief log. i observe 2 problems: when i turn on my master electrical switch, with the key off, i hear one or more of my relays vibrating.. cycling on and off at a fairly high rate. when i then turn on the key the fuel pumps Pre Crank Prime does not stop. the only thing that has changed re the primary assemblage of relays is the tie in to another relay controlling the lift pump. if there is some sort of problem using the tie in to the signal wire i would assume i would have to use, as you suggested, a GP Output. i would greatly appreciate learning how to specifically set up that particular window. should i need to add the GP Output i will need a pin. what pin fits the plug? map in drive: https://drive.google.com/file/d/1C0CTkNrQyMQ7n4j-7Izpb3D9oEjqLcv-/view?usp=share_link log in drive: https://drive.google.com/file/d/1zSpJJG6CriZYG5g5ly1fUEcRFPGpm7HU/view?usp=share_link thank you
  11. i am installing a Radium fuel hanger surge tank that uses a second fuel pump. my current fuel pump uses Ignition 7 Aux output as the trigger. i assume i can use an unused low side Aux output to trigger the 2nd fuel pump relay. when i go to them i am unable to activate any of the outputs. there is a locked padlock showing and they do not open. how do i change them so i can designate the second fuel pump?
  12. another log from 6-11-2021 note AFR is sawtooth in addition to T out of compressor and IAT https://drive.google.com/file/d/16wyqV05rLiACWxs_kDzxxyYYeRpipRZT/view?usp=share_link
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