SD 2bar tune idle issues when warmed up

[racerx203]

1999 C5 LS1 modds: 6.0L iron block all forged, LPE aluni Elderbrock racing heads(Model 61969), comp cam 225,225/575,575, 90Tb/90 Fast Intake, 80# Injectors Seimens, A&A 1000Hp fuel syetem, Idle Fuel Psi 55 and than after 5psi boost referenced, Kooks headers 1 7/8, Full titaium no cats GHL exhaust, 160 stat, SD 3bar Map Tune OS, F-1c Procharger running 18-20Psi of boost, 8" I.W. damper with 3.6 8 rib pulley, flip drive and finally 93 oct with klotz octane boost 16oz to 16gal, Stock 1.7 rocker, I have AFX/NGK wideband on the way we be here any day. Have not added klotz yet still waiting on shipment. If i missed anything let me know. Well i don't like how it idles up and down everytime i come to a stop or take out of gear. I can't use first, second at wot and third sometimes but four and on it starts graping but i guess that's ok. I have 345/30/18 might have to go MT street drags : ). Let me know if you need anything else. Thanks

I'm having i few issues mainly idleing and(M6)when i push in clutch the rpms shoot up say if i'm at 700rpm coming up to a stop push in clutch and the rpms shoot up to 1400 and if i'm in neutral and the car is moving the idle like hangs at around a 1000 rpm intill the car is completly stopped then it tries to go to programed idle which is 800 but can't get there. The idle goes up and down from 600 to 1000 consintly. It does not do this at cold start up. The ilde stays steady untill it warms up then the idle starts acting up. If i can get any help that would be great. I'm a newbie. My eyes are hurting from reading so much tuning stuff i don't even know how to go to the bathroom now I'm so confused. If it correlates with my idle issue i'm getting knock around 5000rpm and so i let off the gas, and it surges between 1000rpm and 1300rpm if trying to maintain a certain speed like looking for a parking place in a mall when you creep around waiting for a spot. The car surges and people thing i'm messing with the gas pedle because the car is lurching. Embarrassing.

[titanium_skeleton]

I am just new at this myself but nothing looks good too me . First thing I see wrong right off the bat the engine size an cylinder volumes are not corrector for your 6.0 engine block. You have a lot of tables just flat lined everywhere. Just from what I have learned in a few weeks on working on my SC Vette. Even someone thats a pro at this is not going to be able to fix that over night .

Nice list of mods tho should be when tuned right good luck

[racerx203]

I am just new at this myself but nothing looks good too me . First thing I see wrong right off the bat the engine size an cylinder volumes are not corrector for your 6.0 engine block. You have a lot of tables just flat lined everywhere. Just from what I have learned in a few weeks on working on my SC Vette. Even someone thats a pro at this is not going to be able to fix that over night .

Nice list of mods tho should be when tuned right good luck

I told the tuner it's not a 5.7L it's a 6.0L and every time i talked to them they keep refuring it's a 5.7 and i keep correting them. NNNNNNNOOOO it's a 6.0L. It's winter here in chicago so time is not important. I drive the car ever day in the city so the idleing is just anonning and with my F-1 you really notice when the idle is not right becaucse it's loud.So imagine at a red light and people walking in front of the car and turn your volume on your stereo up and down people start looking. If like an idoit.

[5_Liter_Eater]

Did you do anything to account for the bigger TB? Seems like ETC Area Scalar would need to be modified although I don't know how to figure out how much to change it by.

Have you run the RussK idle procedure? After doing that the next things to look at would be throttle cracker and throttle follower. Sorry it's been a while since I've done a 3rd gen so I can't remember the rules of thumb for messing with those.

[5_Liter_Eater]

Thread on ETC scalar: http://www.hptuners.com/forum/showthread.php?t=37331

[racerx203]

Is there any way to check if my 80 siemems injectors table is correct?? I 'am so confused on where to start adjusting my tune. From what i read do i start logging VE table then replace with new data??? I'm getting knock, i have a scan if you want to look. I don't know what or where to adjust timimg. Do i adjust high oct or low oct both tables are the same is that right? I tought there should be a knock retard so when knock accurres it should pull timing. How do i check for that. All i keep doing is read but i don't know how to exicute on the tables. I have 3bar but my tune shows 2bar????. I would like to start sdjusting idle table but don't know where to start. I read that throddle crack is why my car feels like it' in curies control all the time. Is there any way to turn that off??? People say to adjust throddle crack how just start putting in lower values??? DOn't understand.If i add klotz boost will that take care of the knock or is there different levels of knock???? Oh my i'm confused

[racerx203]

I have the log. If someone wants to take a look at the knock.

[edcmat-l1]

Displacement isn't right. IFR for those inj isn't right. VE doesn't look right. Too much idle timing for that cam. Too much idle airflow. ETC scalar isn't right.

[racerx203]

Displacement isn't right. IFR for those inj isn't right. VE doesn't look right. Too much idle timing for that cam. Too much idle airflow. ETC scalar isn't right.

Thankyou, Wow those a-holes at SPEED INC said the tune was perfect and my engine had mechincal problems.I wish i had a base to start with like a stock file??

[5_Liter_Eater]

Get one from the repository.

[Asylumwarp]

Displacement isn't right. IFR for those inj isn't right. VE doesn't look right. Too much idle timing for that cam. Too much idle airflow. ETC scalar isn't right.

Its awesome someone jumps in, looks at the tune, tells you whats wrong, but not what to change it too... Great Info.. Is that just what you feel like "giving" out right now?

[5_Liter_Eater]

Have you run the RussK idle procedure?

Never heard anything after posting this. RussK idle procedure usually works wonders. I haven't looked at the tune but if what Ed says is true then it needs more work than many of us are willing to put into it over the interwebz.

[racerx203]

Never heard anything after posting this. RussK idle procedure usually works wonders. I haven't looked at the tune but if what Ed says is true then it needs more work than many of us are willing to put into it over the interwebz.

tHANKS FOR info sicne i'm a newbie i've been reading and reading and not getting anywhere. And yes it's a start but yes it does me know good because i'm still learing and reading so just to say this is off and this is off really does me no good but it's a start. What it did for me is focus on what ed mentioned instead of reading in the dark and getting confused beyond my calculus classes back in college. I've been working with a forum member on where to focus on. So that's my i haven't responded. I'm in the process of getting my WB installed and set up. He said that would be very help full going forward. I have a 3 bar sensor with a 2 bar tune. Speed inc who tuned my car told me and charged me alot more money to do a 3bar tune but i don't think i have a 3 bar tune? So where i'm at right now is that my scalar is off. Staock TB was 78mm now i have 90mm with 90 fast intake and from what i've been reading is i have to change scaler value to .0192 does this sound right. The member i'm working with told me never to touch the scaler i'm confused.
Please help should i do the russ k idle processdure or is there to many things messed up? where should i start first so i could read and reseach that specific area? Just reading blindly is really not helping me but i'm getting use to terminogy and i'm not as lost when i read about this or that. Where do i make a change i see off idle scaler and etc scaler if it should be .0192 then my value now is wrong at .0255 is for 78mm TB correct??????

[racerx203]

Its awesome someone jumps in, looks at the tune, tells you whats wrong, but not what to change it too... Great Info.. Is that just what you feel like "giving" out right now?

I hear you it's frustrating. but i apperheiate very bit of info possible.

[edcmat-l1]

Its awesome someone jumps in, looks at the tune, tells you whats wrong, but not what to change it too... Great Info.. Is that just what you feel like "giving" out right now?

That's right. Catch me on another day, maybe I will give out more.

[5_Liter_Eater]

I understand where you're coming from, here's where I'm coming from; I searched and provided you with a pretty good thread on the ETC scalar and all you come back with is "where is the etc scalar and shoud I change it to .192"? Its not that hard to find and you really need to inderstand what it does. You need to know what the IFR does and why yours is wrong. You have a lot of learming to do and can't expect us to get you caught up in one post.

Change the ETC scalar to .0192

Find the russk idle tuning procedure and do that

These two things should help your immediate problem and then you can research how to fix the other things Ed mentioned.

[racerx203]

I understand where you're coming from, here's where I'm coming from; I searched and provided you with a pretty good thread on the ETC scalar and all you come back with is "where is the etc scalar and shoud I change it to .192"? Its not that hard to find and you really need to inderstand what it does. You need to know what the IFR does and why yours is wrong. You have a lot of learming to do and can't expect us to get you caught up in one post.

Change the ETC scalar to .0192

Find the russk idle tuning procedure and do that

These two things should help your immediate problem and then you can research how to fix the other things Ed mentioned.

Yes thankyou i did jump the gun on the scaler after i posted went back and found what needed to be done, sorry. My head is spinning in all direction i have all this info in my head i get confused on what i need to ask. I'll have my thougths down better next time. I'm not asking for hand outs and i got this tuneing stuff to learn. So yes you did point me in the right direction and yes i have mountain of stuff to learn. I just need a little assurance that i'm heading in the right way. I don't want to put a wrong value in or in the wrong table and start the car and it revvs pass redline ouch. Thanks again and sorry

[gn2beatu]

If your in over your head, call FAST Motorsports, he is in Chicago area.

Brandon is a real good tuner, I have met him personally. Allot of people on the Trailblazer SS Forum have used him with great results. His number is 847 815-8791

[racerx203]

If your in over your head, call FAST Motorsports, he is in Chicago area.

Brandon is a real good tuner, I have met him personally. Allot of people on the Trailblazer SS Forum have used him with great results. His number is 847 815-8791

Thanks, but for right now i need to learn this. I need to comunicate better and take some hits to the head on the way if that's what it takes. I very much appreheiate people to take their time and look and even suggest and put me in the right direction. Thanks everyone