so today i finally used my new tuning equiptment for my 89 305tpi with zz4 cam with 1.6 rockers on the intake and ported 601 heads with bolts ons. i also have a 160 thermostat. i just datalogged 2 part throttle runs and will upload them and 1 WOT run which i wont be doing until i take out timing and add fuel. basically atm im running off a tpichips.com chip and its horrid. dont get me wrong the car ran a little better with it but now i truely believe you have to do it yourself. now i have a few questions. all of my blms were 150+ part throttle and wot. wot actually got knock retard too. the car smells at idle to where itll kill me. it doesnt have the power that it should and im trying to learn this. my questions are. what tables do i modify to add more fuel? how do i program the temperatures for a dual fan setup when ive looked through the 6E ARAP bin and only find a single fan? can anyone help me with a good starting point bin other than what i have because ive read the spark is way off on the arap since its for aluminum heads but i do have the 22ib injectors so those are already in there. anyways heres the logs any help will be very appreciative.

ok im having a hard time getting these files to work i dont know if the one below will work but let me know i have 2 more but diff format i have to convert.

i got csv files but dont know how to upload those.

 

To upload the files, compress them and upload them as a zip file.

I would not start with ARAP. I would start with a 305 calibration. The load scaling for the LV8 and maf tables will be closer. Many other constants will also be setup uniquely for a 305.

 

ok well i ended up starting with APYM. from here i adjusted for my 160 thermostat but for a single fan im not sure how to make the secondary fan work. next i adjusted for the 22ib injectors and took the speed limiter off. yesterday i took new datalogs with the APYM running with such mods and started tuning and adjusting MAF tables 1-2. all went well i tried it again they were at 128. but then i drove it again and itll only doing it randomly but when light throttle (table 1) itll shoot to 140ish BLMs but then after itll be back down to 128 why? then i thought id do a pe run so i WOT it datalogging 1 run. went back adding some pe fuel in and checked now thats at 128 but with the stock timing tables im getting knock and its retarding the timing roughly 10 degrees. ill try again for some of these datalogs if i saved them off my gf's computer to my usb.

 

that zip file should include 2 datalogs 1 is w/o pe the other is with pe only. and the 3rd file should be my latest BIN im running after my mods to it. i think the non pe file is before the new BIN. let me know if it works and if everything looks roughly correct?

 

I don't like the fact that the ECM is commanding 40* of spark advance above about 4,000 rpm. I looked at the LV8 and its only around 140 @ WOT. That gives a spark advance from the look up table of 34*, then add in your 6* PE spark and you have too much timing. I then also have to question why your 305 with a cam, heads, and bolt-ons is only pulling 132 gms/sec (the reason for the low LV8#). That is awfully low for even a mild 305. I would suspect an air leak in the intake tract or a dirty/bad maf. The 601 heads that I ran liked about 32* total timing all in by 3,600 rpm. 40* is WAY TOO MUCH for those heads on a 305. THis was the factory CCC Q-Jet spark table used with the 601s, in a Van though. Your ECM is also programmed to give a WOT air/fuel ratio in the high 10s to low 11s. I would re-work the PE fuel tables and get that number back up to around 12.3-12.5:1 @ WOT.

 

ok so a couple questions and a few more new ones. so should i try that timing table above and see how the car reacts to that? and thursday after the rain passes ill take my dads MAF and see if thats causing the low lv8 because i just put this motor together and im pretty sure there are no vacuum leaks. ive sprayed carb cleaner under the plenum all around the manifold and near everything place the pieces match up and nothing. what are the effects of it reading low LV8? as for the WOT am i trying to get those BLMs to 128 or am i working on my own? i added more fuel to get to 128 for pe last tune which isnt seen here but then tonight i just downloaded the AFRtuner program and put the AFR to 12.5 roughly where it should be at in that chart and it took a lot of pe fuel out. the stock AYPM table start with in the coolant vs pe table 17.97% and the program put it down to 14.84%. as for the pe vs rpm it went from 42.18% to 3.9% which scares me because it seems like taking all this fuel out will make me go lean.

one last problem i forgot to address was while cruising roughly 40-45 mph on very very light throttle sometimes the car will start bucking and wont stop until i let off the gas or give it more.
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and another thing before i forget again how do i delete the AIR injection from this? ive been reading up but cant find anything in the program thatd do it except maybe under flags and switches where it says is set use 2 air valves but im not sure so i left it alone. BTW thanks for your help.

 

thankyou fast 355 youre a genius turns out my MAF was way off. i used my dads and all my readings have changed in the opposite direction go figure. so i recorded one run with light throttle and a quick WOT. the LV8 i know is 200 and up now from max of 160 before. again thankyou and read both posts above id like a little advice with that please

 

fast 355 or anyone how do i change my WOT afr so my blms arent adjusted from where i set them?

 

As long as the MAF is now reading accurately and not hitting the upper limit table, taking the fuel out should not make you run lean. I re-made a .bin with what I feel the 601s need for fuel and timing atleast to get you started. Having run them, they are quite a different animal than the 416 or 081 castings. The smaller closed chamber and more centrally located spark plug, give these heads a faster burn than the others. In fact the L30 Vortec has chambers that are very much like these.

The bucking at light throttle is probably a combination of a couple of things, the TCC locking too soon, excessive EGR at low rpm, and timing map.

As far as the air valves, I don't know of a F-body with AIR that did not have both a AIR Divert and AIR Switching valve, that would be 2 valves.

 

The BLMs will only lock if the engine is running lean when it hits PE. If it is slightly rich the BLM will reset back to 128. So shoot for the 122-126 range on the BLMs. This will keep the ECM from adding back in too much fuel. Lets say you are running down the road at part-throttle, the MAF tables are off or you have a small intake tract leak, and the engine is lean, 145 BLM. The ECM is adding in 13% more fuel. 145/128 = 1.132 The ECM doesn't know why the engine is running lean and the engineers took it upon themselves to program the ECM so that it would keep adding in that extra 13% of fuel, ON TOP of the PE fuel. The reason for this is protection in case the fuel delivery system became weak, weak pump or plugging fuel filter, or in the more normal case now, alcohol in the fuel. Well anyway long story short, if you get the BLMs down to where they are slightly too rich, this will never happen.

 

well to start off thank you very very much for the starter BIN i really appreciate it. the problem i see is on the last datalog i through up it shows the ecm wants a target afr of 10.- but i heard optimal is 12.5ish. so how would i get WOT to go to 12.5 and stay there instead of it trying to adjust itself to go back to 10's.

 

PE fuel tables. They are set for 12.48:1 IIRC the way my .bin is setup.

 

ok sounds good ill give it a try, but for now im still waiting on my new MAF to get here. thanks again youre awesome.

 

ok well i downloaded firefox and got your file finally and i just got my remanufactured MAF a couple days ago so im gonna try both tomorrow but wont be able to datalog since the woman has the laptop.

 

I am sorry, I got completely tied up with work and did not even look at the message you had sent asking me to send you that file.

 

no thats alright, youve done enough for me. i tried your bin today i didnt datalog but it feels a little bit quicker and the stutter or hesitation(w/e you want to call it) was gone. thankyou again and ill post up my datalog next time i do it.