Drj8787

Ran this a while back I've had multiple 60' in the 1.77-1.79 range so I know I can improve on this some trying to get down to a 11.99 da was somewhere between 1400-1650

HCI2000SS

iTrader: (2)

Mods and vehicle?

murphinator

iTrader: (2)

pretty efficient driving to pull 12.5 out of a 106 trap.

looking at your slip your only gaining 20 mph from the 1/8 mile trap to the 1/4 mile trap , seems low but the da was not great and waiting to see the mods like mentioned above.

Drj8787

98' z28. 100% Stock motor w/159xxx w/ Lt headers, 3" ory "shity kind of merge" bullet and turn down, diy p&p on the maf, udp, lid, k&n filter that I've cleaned and don't oil, 3.42's, northtexasconverters 3600"that's on the tight side " stall, trans built by me, tuned by me with HPT lol that rhymes. 275/40/17 Mt street ets on stock ss wheels. Qa1 single adj coilovers front n single adj shock rear

Only weight out of it is the spare n jack and no front sway bar, Im 150 wet lol

I have always felt like the back half was on the slow side.

I'm new to tuning, my prior best was 12.63@ 105.66 same mods but I hadn't rebuilt the trans yet or tuned it. The trans was in perfectly good shape but I had torn up the converter at the track, so I tore the trans down to check it out. My first 4l60e build

Drj8787

Old best

murphinator

iTrader: (2)

you say your new to tuning , are you using a wideband ?

if not get the fueling in line and you can likely add some timing and get that 2nd half up to 22/23mph gain and get it trapping in the 110 range overall which is where I would expect to see those mods trapping , add that to your decent 60 foots and you should be 12.3 ish. Then add a ram air and ls6 intake and you will be knocking on the door of 11's.

Drj8787

Yes using a wideband. I haven't touched the timing

Drj8787

So why is my mph so low when others do things like this so why can I not run 109-112 fastest I've ever ran was 107.xx

senicalj4579

iTrader: (41)

Your MPH strikes me as odd also. Maybe its wrong somehow? My car when it had stock stall did 12.6@110

Drj8787

I don't think its the track equpitment becuz hp tuners shows same mph whenever the tps stops showing 100% so I'm threw the traps and they are away about spot on with the log

Drj8787

I'm new to tuning so it's prolly the tune lol I'll post it

Slowmotive

iTrader: (6)

I was just coming over to look at this.. It seems like your mph from 1/8 to 1/4 is super low.. Maybe you're getting knock readings up top? Faulty coil maybe?

Drj8787

here is tune and log from my last time at the track I don't think it was the 12.57 one tho. log is in hpt 2.24

Drj8787

I have latest hpt 3.0 update and everything it that log working so if I need to post something else for you guys to see everything let me know

Drj8787

well guess I wasn't logging knock retard in this log ill try in get out n get a new wot log with knock retard in it

Slowmotive

iTrader: (6)

Give it a shot if you see it you'll Def find your answers. I don't tune cars unless they have distributors Hahaha I'm sure people on here can look at those files in hpt though

Drj8787

heres new log with wot I am getting some knock retard now what do I do about it or whats causing it

Dark SS

iTrader: (6)

Some cars just mph low. Mine is that way but with my ET I can't complain.

Drj8787

well it seems that I'm getting some retard from 3/2 downshift that hangs around threw the entire pull and from the limiter that I just barely blip on the 2/3.

so I'm gonna make some adj to shift points or limiter/both see which works better and see what happens weekend after this one when the track opens for the year

transamtom

iTrader: (8)

Are you running it right out the back door?

Don't let off at the stripe.

The speed traps are after the finish line sometimes up to 100 feet past.