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Search: Posts Made By: tequilaboy
Showing results 1 to 50 of 311
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Forum: DIY PROM
04-30-2024, 07:15 PM
Replies: 2
Views: 199
Posted By tequilaboy

Re: Get me up to date on the MAF sensor process.

Simple math.

For a stock maf, divide the maf tables and the injector constants by a factor of 1.5 and multiply the Load scalar by the same factor. From there fine tune maf table #6 between 4.71...
Forum: DFI and ECM
02-07-2024, 11:01 AM
Replies: 2
Views: 238
Posted By tequilaboy

Re: Baud rate changing

Example log from the OP's car:

https://datazap.me/u/tequilaboy/camaro-log2-dropped-data?log=0&data=0-1-56-57-58-63-64-71-103&solo=0-1-63-71-74&zoom=5908-6102&mark=5951-6036

Note the...
Forum: DIY PROM
12-05-2023, 06:39 PM
Replies: 0
Views: 182
Posted By tequilaboy

Date code relationship to release date?

Does anybody know how to decode the date code (and sequence number) bytes?

The release date is the number of days relative to the epoch date of 12/30/1899.

Example (from ACKY): The release...
Forum: TPI
08-27-2023, 08:45 PM
Replies: 12
Views: 310
Posted By tequilaboy

Re: 1987 prom chip in a 1989 ?

Sorry, forgot about VATS.
Forum: TPI
08-27-2023, 08:26 PM
Replies: 12
Views: 310
Posted By tequilaboy

Re: 1987 prom chip in a 1989 ?

B6 is the FMAF input.

Are you suggesting that your 87 has a frequency maf and that the ABWN bin that you have is setup for a frequency maf? It does not appear to be based upon the version that...
Forum: DFI and ECM
06-29-2023, 06:52 PM
Replies: 5
Views: 592
Posted By tequilaboy

Re: How to get my ecu tuned?

The data on the Mig is inaccurate.

Here's an old test log from an 85 C4 running a modified 870 ecm with an analog Ford maf:
...
Forum: DIY PROM
05-29-2023, 08:08 PM
Replies: 12
Views: 643
Posted By tequilaboy

Re: Need some more help with crank fuel

I like to vary the multiplier vs ref pulse in order to create a bit of a repeating ramp pattern and then level it out after about 3 ramp cycles to avoid flooding during extended crank events:...
Forum: DIY PROM
05-24-2023, 06:18 AM
Replies: 4
Views: 347
Posted By tequilaboy

Re: initial spark advance

You really should discuss this with the tuner. Perhaps (Likely) it is a hack job and was intended as a crude way to globally retard the timing by 6 degrees. Supercharged car IIRC. Be careful!
Forum: History / Originality
05-06-2023, 09:28 AM
Replies: 13
Views: 826
Posted By tequilaboy

Re: 1984 Z28 shipped to "proving ground"

Look closer. It was shipped to Milford.
Forum: DIY PROM
04-24-2023, 11:14 AM
Replies: 5
Views: 430
Posted By tequilaboy

Re: injector tuning question

If you insist on making it work with what you have rather than a more sophisticated approach, try the bpw vs load table. Don't forget to clear the flag/switch (bit 6) as shown:

For a given row,...
Forum: Alternative Port EFI Intakes
04-17-2023, 07:50 AM
Replies: 247
Views: 15,911
Posted By tequilaboy

Re: T-Ram vs. TPI, Dyno Results....

Which base is being used for the Super ram test? Stock base, ported base, original Accel base, (TPIs Big Mouth, Edelbrock or later Accel base), other?

Probably won't make much difference, but...
Forum: DIY PROM
03-28-2023, 02:36 PM
Replies: 7
Views: 756
Posted By tequilaboy

Re: ADX for $6E Mask - Comprehensive Version

L0086 is a different signal. It is the 12.5 msec old value of the Throttle position T/F load axis variable. Not sure why this would be interesting.
Forum: DIY PROM
03-26-2023, 05:09 PM
Replies: 7
Views: 756
Posted By tequilaboy

Re: ADX for $6E Mask - Comprehensive Version

You can log L0083 if you wish to see the tps load axis variable directly (conversion: X/2.56). You must also edit the bin in order to replace some existing byte in the datastream.
Forum: DIY PROM
01-23-2023, 09:28 AM
Replies: 9
Views: 735
Posted By tequilaboy

Re: Idle injector pulsewidth

No FMU. Stock FPR only. Fuel pressure was around 50 psi (and likely falling due to single 255 lph in-tank pump struggling to keep up with demand).

At one point in time I had ~54 psi using a...
Forum: DIY PROM
01-21-2023, 07:42 AM
Replies: 9
Views: 735
Posted By tequilaboy

Re: Idle injector pulsewidth

I think that you're way overestimating your injector needs. Here's a P600b car with (my old) Lucas 42 lb/hr injectors (not my car, btw) on California fuel as far as I'm aware.
...
Forum: DIY PROM
01-18-2023, 10:14 AM
Replies: 9
Views: 735
Posted By tequilaboy

Re: Idle injector pulsewidth

With 80 lb/hr injectors in double-fire mode (running E0-E10 fuel) you can expect the idle pw to be around 0.70-0.75 ms (or even less, depending upon rpm).

Here's a log with 60 lb/hr injectors...
Forum: DIY PROM
12-22-2022, 06:35 AM
Replies: 29
Views: 478
Posted By tequilaboy

Re: SA Ref not a fixed amount of advance

2's complement of 0xFFF5 = 0x0B or 11 (really -11). 11*90/256 = 3.87. I believe this is the correct limit value for Max Spk Retard (Rel to Ref) and not 3.5 degrees as often commented. So the...
Forum: DIY PROM
12-21-2022, 08:54 AM
Replies: 29
Views: 478
Posted By tequilaboy

Re: SA Ref not a fixed amount of advance

Example log with base timing (initial advance) set to zero: ...
Forum: DIY PROM
12-20-2022, 07:53 PM
Replies: 29
Views: 478
Posted By tequilaboy

Re: SA Ref not a fixed amount of advance

SA Ref should equal (SA Tdc - base - knock retard). Knock retard will reduce SA Ref below SA Tdc - base.

I like to set my base timing to zero, so what you see (on SA Ref) is what you get. This...
Forum: DIY PROM
12-13-2022, 05:46 PM
Replies: 8
Views: 1,329
Posted By tequilaboy

Re: Pocket Romulator

Looks like it could work with a socketed memcal or typical G1 style adapter using the 2 included 14 pin headers. Might have to stack up a few sockets for clearance above the case. I like the idea...
Forum: DIY PROM
10-31-2022, 09:00 AM
Replies: 6
Views: 558
Posted By tequilaboy

Re: Understanding IAC from Park to Drive

I'd say a 30-40 (IAC) count delta is pretty reasonable going between a stable idle in park/neutral and in gear and vice-versa with a typical p/n offset.

Here's a stockish L98 going from drive to...
Forum: TPI
10-21-2022, 04:22 PM
Replies: 20
Views: 753
Posted By tequilaboy

Re: 24lb high impedance injector question

If you consider the ethanol content of today's fuel, you will need about 5% enrichment to compensate for the ethanol, so the BLM will be elevated somewhat (by maybe 6-7 counts) with respect to...
Forum: DIY PROM
08-15-2022, 11:43 AM
Replies: 10
Views: 313
Posted By tequilaboy

Re: lv8 load numbers kpa conversion

Different application entirely (turbo car), but another example just to illustrate how closely related load, ipw and manifold pressure really are to each other: ...
Forum: DIY PROM
08-14-2022, 10:03 PM
Replies: 10
Views: 313
Posted By tequilaboy

Re: lv8 load numbers kpa conversion

You can also cheat a bit, and convert your injector pw to load, since they should be directly proportional to each other (for a given target afr). Take your maximum pw value and call that 100% load...
Forum: DIY PROM
08-14-2022, 09:32 PM
Replies: 10
Views: 313
Posted By tequilaboy

Re: lv8 load numbers kpa conversion

LV8 literally represents the grams of air in the cylinder or gms/cylinder. In our 5.7L V8 engines, LV8 is scaled so that 100% load (or 255) is equal to 0.8 gms/cylinder.

(gms/sec)/(rev/sec) =...
Forum: Power Adders
08-13-2022, 04:49 PM
Replies: 10
Views: 1,696
Posted By tequilaboy

Re: Paxton SN93 Supercharger

To give you an idea of the potential airflow and fueling requirements for a blown 305 tpi car, here's an example log from a MAF tune that I provided to Blowerworks for Felix's car:...
Forum: DFI and ECM
05-04-2022, 10:09 PM
Replies: 6
Views: 746
Posted By tequilaboy

Re: Dual ECMs

Great question. I like it. It has been done before.

Could always run a stand alone trans controller like a compushift (not a fan) and tune the 165 separately.

What are you doing and why? Ecm...
Forum: DIY PROM
03-30-2022, 07:02 AM
Replies: 10
Views: 873
Posted By tequilaboy

Re: Can't Get TurnerPro To Read ECM

Try using a 160 baud adx file w-10 k resistor first. This might be the best you can do with TunerPro without a lot of experimentation.

Note: It will be a challenge to connect to an 86 bin at...
Forum: DIY PROM
02-08-2022, 11:36 AM
Replies: 11
Views: 885
Posted By tequilaboy

Re: $6E WBo2 AFR Patch-Report Missing MAT and Add MAF Voltage

Another way of simplifying things: we can combine both input/output tables and use the LFFA7 table output values directly as the input and use either my MAT °C or MAT °F table values as the output...
Forum: DIY PROM
02-08-2022, 09:41 AM
Replies: 11
Views: 885
Posted By tequilaboy

Re: $6E WBo2 AFR Patch-Report Missing MAT and Add MAF Voltage

As a follow up, I dug up an old $6E log to play around with (without the WB02 patch). After a bit of tinkering with the adx, I displayed the inverse MAT a/d (L0130), the MAT scaled signal (L0061),...
Forum: DIY PROM
02-07-2022, 03:24 PM
Replies: 11
Views: 885
Posted By tequilaboy

Re: $6E WBo2 AFR Patch-Report Missing MAT and Add MAF Voltage

Interesting stuff.

Sorry, I didn't realize that $6E already had an internal table to scale the MAT at LFFA7. This is something that is not present in $32B. The internal scaling is a bit peculiar...
Forum: DIY PROM
02-06-2022, 10:02 AM
Replies: 11
Views: 885
Posted By tequilaboy

Re: $6E WBo2 AFR Patch-Report Missing MAT and Add MAF Voltage

My MAT scaling table is a bit different. Here's what I have been using lately for $32B MAT scaling (for data display purposes only) expressed as a 17 row table with fixed spacing and h = 16.
...
Forum: DIY PROM
07-05-2021, 10:55 AM
Replies: 3
Views: 290
Posted By tequilaboy

Re: fan control questions in $6E

Note that there are two sets of fan on/off temperatures for A/C on and A/C off. This is a bit misleading since the A/C on settings are always active below the 11 mph threshold and they are also...
Forum: DIY PROM
06-21-2021, 04:21 PM
Replies: 17
Views: 458
Posted By tequilaboy

Re: Does the 32B Code have an RPM cap or limit?

Datamaster also has the drp-based rpm signal available, I just forget how its labelled in Datamaster (RPM16 or something like that). If you display that signal along with the rpm x signal (0-6375...
Forum: DIY PROM
06-09-2021, 06:42 PM
Replies: 23
Views: 1,590
Posted By tequilaboy

Re: Tuner Pro R/T AFR Help? Modded ‘89 Firebird Formula 350

Latest log with new cts: https://datazap.me/u/tequilaboy/firebird-****-3?log=0&data=42-46-50-53-55-60-65-82&solo=42-55-56-60-65-81&mark=1038-44

New link to same log (first one doesn't open/display...
Forum: DIY PROM
06-04-2021, 10:09 AM
Replies: 23
Views: 1,590
Posted By tequilaboy

Re: Tuner Pro R/T AFR Help? Modded ‘89 Firebird Formula 350

Not too much to go by with the latest log due to limited data, but the fuel trim behavior in closed loop does show a bit of a lean tendency with the BLM climbing to 139 in cell 5. Load is still...
Forum: DIY PROM
06-03-2021, 08:37 AM
Replies: 23
Views: 1,590
Posted By tequilaboy

Re: Tuner Pro R/T AFR Help? Modded ‘89 Firebird Formula 350

The low vacuum/elevated load is due to the high engine friction, presumably caused by one or more dead cylinders. Check the firing order, condition of plug wires and plugs along with the cap and...
Forum: DIY PROM
06-03-2021, 06:05 AM
Replies: 23
Views: 1,590
Posted By tequilaboy

Re: Tuner Pro R/T AFR Help? Modded ‘89 Firebird Formula 350

Your log: https://datazap.me/u/tequilaboy/firebird-****?log=0&data=46-50-53-55-60-65-70-79-82&solo=55-65-82&mark=1047-497

MAF, LV8 and injector pw are all very high for an idling engine (about...
Forum: DIY PROM
03-10-2021, 08:50 PM
Replies: 12
Views: 936
Posted By tequilaboy

Re: Big cam and high compression 383 with tpi

You can lead a horse to water. I'm out.
Forum: DIY PROM
03-10-2021, 01:09 PM
Replies: 12
Views: 936
Posted By tequilaboy

Re: Big cam and high compression 383 with tpi

Back to basics to identify correct mask and xdf file first: What year car and which base bin?

Note: $32 and $32B bins share the same mask id byte, so they can be easily confused unless you dig...
Forum: DIY PROM
09-10-2020, 01:29 PM
Replies: 15
Views: 1,684
Posted By tequilaboy

Re: 6E MAF: Proper Way to Tune Open Loop?

Still have A.I.R. pumping air into the exhaust in open loop?
Forum: Power Adders
09-06-2020, 11:58 AM
Replies: 42
Views: 1,369
Posted By tequilaboy

Re: Current status - T-Trim on 412"

Wacky test idea (assuming engine can survive hot boost): Connect one end of the intercooler to the blower inlet (using hard pipe so it won't collapse). Leave the other end open to atmosphere. This...
Forum: Power Adders
09-06-2020, 09:45 AM
Replies: 42
Views: 1,369
Posted By tequilaboy

Re: Current status - T-Trim on 412"

Working from the fuel perspective 51.18 lb / hr * 8 injectors * 10.3 AFR / 60 min/hr gives 70.3 lb/min for air flow, which is not too far off that predicted by the compressor map, but still a 15...
Forum: Power Adders
09-04-2020, 11:45 PM
Replies: 42
Views: 1,369
Posted By tequilaboy

Re: Current status - T-Trim on 412"

That would make the PR about 1.85.

Looking again at the compressor map, PR of 1.85 and 47k impeller speed would suggest air flow around 85 lb/min. Does the fuel flow fit with this air flow...
Forum: Power Adders
09-04-2020, 01:57 PM
Replies: 30
Views: 6,544
Posted By tequilaboy

Re: Procharged TPI *Looking for input*

Felix log: https://datazap.me/u/tequilaboy/felix-log-0?log=0&data=14-24-33-34-36-37&solo=34&zoom=8193-8662

I don't think he's using the IAT...looks like MAT from the data. Would be nice to see...
Forum: Power Adders
09-02-2020, 11:04 AM
Replies: 30
Views: 6,544
Posted By tequilaboy

Re: Procharged TPI *Looking for input*

I always run a blow through setup with bov upstream of the sensor. Your installation looks good to me, but maybe the bend had some influence on the signal. The maf transfer function is parabolic, so...
Forum: Power Adders
09-02-2020, 10:31 AM
Replies: 30
Views: 6,544
Posted By tequilaboy

Re: Procharged TPI *Looking for input*

Just to clarify, since this is often mis-understood: the Blowerworks maf solution mentioned above does not involve the use of a maf translator. It is an analog maf with increased sensing range...
Forum: DIY PROM
06-18-2020, 01:18 PM
Replies: 4
Views: 402
Posted By tequilaboy

Re: Goes rich downhill.

The short duration dfco events are likely due to the load hovering near the enable/disable thresholds. You could increase the hysteresis between them or simply allow dfco to occur at slightly greater...
Forum: DIY PROM
06-15-2020, 09:19 PM
Replies: 4
Views: 402
Posted By tequilaboy

Re: Goes rich downhill.

You're likely at the bpw lower limit. Check the INT. Is it fixed at 128 despite the richness? That is a clue.

Here are some examples of the pw limitation, double-fire, single-fire and dfco events...
Forum: TPI
03-05-2020, 05:45 PM
Replies: 7
Views: 5,638
Posted By tequilaboy

Re: Converting from MAF to MAP

Here's an example of a more modern hybrid system with both MAF and MAP sensors: ...
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