So, after reading till my eyes bled over the past three weeks everything I could get my hands on about Tephra mods I decided to give it a whirl today. I did my final big map conversions this afternoon on break, and loaded them into 96530706 along with my imobilizer. Got home from work and flashed in the ROM...no crank. Imobilizer hex was set for a 2003...set that wrong. Fixed the imobilizer hex and she cranked right up and settled into a nice idle.

I decided to put around the block and see what happens. Everything acted and logged just dandy...like I didn't do a thing. So I cleared the log and decided to do a light pull to get into boost. Spooling up in 3rd gear and it was fine. Decided to do a WOT pull to 5000 in 3rd to see how she acted. Spooled up and everything was fine until about 4300...BAM. Stomach dropped for about 2sec, then I realized I just hit fuel cut (that was a long 2sec). Ran into it twice more in 2nd gear logging there (it isn't until about 5100rpm in 2nd). Got home and looked at the log, sure enough, fuel cut.

So I looked at the fuel cut settings in the Tephra ROM... It has the MrFred 2 fuel cut tables... x1 and x2, and I'm set to use x1 which is pretty much 230 across the board. I look at my logs and I'm rolling right past 230 on to 290.

I just re-read the Tephra v7 post and it does talk about the MrFred load mod, but it says it's set at 300, not 230. Anyhow I set it to 290 and will log some more, but so far the Tephra ROM works just as well as my stock one!

 

ya it will. tephra mod is just addons to a stock rom, its not going to sacrifice drivability. you can either max out the old fuel cut to 319% and never hit it again or just use the x2 fuel cut. fuel cuts good to have incase one of your lines comes off the wastegate and causes you to overboost etc.

make sure you edit the trigger delay also. - the percent you're changing does not represent ecu load btw.


EDIT: you'd still hit it if you didnt make the trigger delay very high in ms.

 

I left the trigger delay at 1sec (1000ms), bumped the load across the board in the x1 section to 290 and ran 4-5 3rd gear pulls. Each pull I am maxing around 289, so I haven't hit the fuel cut again. I'm just bolton's right now so I don't need the x2 map.

Yea, I know this isn't ECU Load, it looks more like 1byte calculated load (matches pretty close). I want to keep the fuel cut for the exact reasons you mention...and so when I hit it next I will probably switch to the x2 map and rescale it down.

 

yeah fuel cut is a HEARTSTOPPER !!!

glad you like it, apparently V7 is a bit of a turn off for some people..

(and that comment is NOT bought about by the recent thread of bigmaps - just a feeling I have had for a while )

 

I finally installec V7 last week and love it! A donation in thanks is coming.

 

I want to convert to V7 but I would like to install a wideband first to make sure that everything is nice and smooth when converting to big map. There are alot of tables in V7 that I have no idea WTF they do so i don't want to screw the pooch by converting

 

I had my car tuned, then I took this project on. When I translated the maps the cells extrapolated cleanly and there are no hiccups at all. My next set of ECU mods will be going to GM 3port boost control, Omni 4bar MAP, and WB02. OnceI get those done I will be doing Alt map switching and going E85. Then I'll be going with Speed Density.

 

If people have been turned off by V7, I think it is only because of difficult start V7 got as compared to V5

 

Not at all!

I feel like the general consensus is that people like T7.
I think they are just confused by all the options and because they are confused (or just don't understand what they are doing) - they think they don't like it. Even though T7 is free, they don't want to go through the 'hassle' of getting it to work on their specific cars / setups, they just want it to 'work'.

Once I'm tuned - you will definitely be getting a donation for all of your hard work and talent !

Keep kicking *** Tephra!




-Bink

 

I agree...it's the confusion factor that had me holding off for 3 weeks. I knew I wanted Tephra v7 months ago. If I couldn't do it myself I was going to go to a tuner to have them load in Tephra v7. After I did all the work I came to the conclusion that you need a self extracting EXE. Just call it Tephra Mod v7.

When the EXE is executed it asks for you to point to your current ROM, and what options you want. It checks the ROM version and will select the correct Tephra ROM for you.

If you want to get really fancy it could input your imobilizer and imobilizer hex for you too!!

If you want to get SUPER fancy (and common, who doesn't), it could auto-extrapolate your maps to 'big-maps' and load those in too.

With the above you just download the exe, run your ROM through it, and flash in the output ROM.

 

I am very thankful for all of your time (as well as the other contributors). Thank you Dave!

 

Anytime you hear explosions from under the hood it's scarry

 

My tuner and I just loaded v7 on mine and so far i've been impressed. Start up smooth idles better.. Got the grimmspeed bcs and the omni 4 bar in a couple months once my tuner is more comfortable and tuned a couple SD i'm going with that.. These injen pipes annoy me and i want a more clean engine bay. Good work Tephra, can't wait till I can hit my launch map and VROOM out the hole!

 

cool bananas