3.4 Frankenbird Won't Start!

[tkoforpresident]

it's a LOT better in person. Oh and wait til i try out the new .bin, it should sound even nicer!!

[tkoforpresident]

maybe in a couple days i'll go log again with it.

[robertisaar]

maybe in a couple days i'll go log again with it.

that's how you work it up to perfect, just be sure to be consistent.

[tkoforpresident]

Well tomorrow I'm going to go and get another log to make sure everything is running as good as it did last time and to see how the Bird likes having it's idle lowered to about 800rpm. Should make that Cam sound even meaner, and i'll try to take another video.

Also going to be plugging a flat tire in preparation for driving it to a shop to have the brake system bled fully which of course is in preparation for getting some logs while driving and then hopefully having a solid enough tune that i can DD this thing without worry.

Is there anything i should know about logging while actually driving? AFAIK the setup and connections remain the same but HOW should i drive to get the best log and for how long? etc.

thx!

[SappySE107]

Drive it normal, unless normal to you is racing people.

[tkoforpresident]

Drive it normal, unless normal to you is racing people.

No, I don't race it much even when it is running properly.

[robertisaar]

Drive it normal, unless normal to you is racing people.

i'll X2 this...

basically, make slow and deliberate throttle adjustments. just decide how far your foot should be on the throttle and keep it there until it's necessary to speed up or slow down. and the throttle changes you do make should be SLOOOOOOW and smooth to remove any kind of AE/DE interference. once you have the whole VE table (or a reasonable amount of it) perfect, then you can work on AE/DE.

[tkoforpresident]

i'll X2 this...

basically, make slow and deliberate throttle adjustments. just decide how far your foot should be on the throttle and keep it there until it's necessary to speed up or slow down. and the throttle changes you do make should be SLOOOOOOW and smooth to remove any kind of AE/DE interference. once you have the whole VE table (or a reasonable amount of it) perfect, then you can work on AE/DE.

Thanks for the tips Robert. I will follow them to a "T".

I haven't heard that term AE/DE thrown around yet, what is that?

[robertisaar]

Acceleration Enrichment
Deceleration Enleanment

basically, opening or closing the throttle quickly. due to the way air behaves, quickly opening the throttle will cause a MILD supercharging effect in that air will rush at a much faster speed than one would anticipate into the engine. it only lasts in the duration of mS, but it will be noticable if you're too rich or lean on AE.

DE is a bit tricker, but same concept, just in reverse. harder to tell if it's too rich or lean though since too lean AE will give a hesitation when you give throttle and too rich it will bog, but i'm not sure how to explain the effect of DE on fueling... one of those times where a wideband would be necessary to get perfect. i've never had to play with it myself.

[tkoforpresident]

Acceleration Enrichment
Deceleration Enleanment

basically, opening or closing the throttle quickly. due to the way air behaves, quickly opening the throttle will cause a MILD supercharging effect in that air will rush at a much faster speed than one would anticipate into the engine. it only lasts in the duration of mS, but it will be noticable if you're too rich or lean on AE.

DE is a bit tricker, but same concept, just in reverse. harder to tell if it's too rich or lean though since too lean AE will give a hesitation when you give throttle and too rich it will bog, but i'm not sure how to explain the effect of DE on fueling... one of those times where a wideband would be necessary to get perfect. i've never had to play with it myself.

ah, gotcha thanks. I understand the concept.

what about this PE mode i keep reading about? But thats wot tuning and later on right?

Where/when do we start changing spark?

[SappySE107]

I can set the chip to reduce the effects of PE and AE, but normal driving will suffice for now. If there is hesitation or bucking, then AE and DE need to be addressed but the base fuel tables need to be setup first.

[robertisaar]

I can set the chip to reduce the effects of PE and AE, but normal driving will suffice for now. If there is hesitation or bucking, then AE and DE need to be addressed but the base fuel tables need to be setup first.

couldn't have said it better myself.

PE and spark will also be dealt with then, assuming you don't run across knock in the process, in which case that needs to be dialed out ASAP.

[IsaacHayes]

Yes PE = Power Enrichment, when you go 70% or more throttle (or wherever it's set at). WOT basically.

DE, This is when you let off the throttle, so you don't get a nice puff of black smoke out the back like old carb'ed cars... And when you are engine braking the PCM will actually pull out all fuel to save fuel as none is needed even to idle the engine as the trans is turning the engine over...

[tkoforpresident]

thanks for all the info guys

[tkoforpresident]

here's the log. the desired idle was set at 800 and it seemed to idle around ~900 or so when warmed up. Definitely sounded nice and seemed to run fine. I wonder if we could drop it any more, or if we should just leave it as is. I'll wait for your opinions on that. I also have a video to post up as well.

The cooling fans kicked on right when they were supposed to so i was glad about that, but i'm going to get rid of the "min fan run time" altogether since it dropped the temp further than i would have liked by the time it shut off.

let me know what you think of the log, i'm going to look at it right after i post.

max