Do my mods warrant tuning??

[BurnEm]

I am putting on jethot LTs and ORY next week and I was wondering if I will benifit from tuning. my frined just bought a laptop and wants me to get a-tap or ls1edit so we can tune my car. I eventually want to put in a modarate cam- I know after a cam you deffinatly need tuning.
I am leaning towards a-tap, just because I can use it with other cars and it is much cheaper.

mods are: PS cooler, lid, fernco, jethots (in next week), GMMG.
2000 z28 m6 43000mi

[dvandentop]

yeah you could get tuning to get rid of the 02 codes also to help the the a/f ratio but not totally necessary

[JandJsTA]

Originally posted by BurnEm
I am putting on jethot LTs and ORY next week and I was wondering if I will benifit from tuning. my frined just bought a laptop and wants me to get a-tap or ls1edit so we can tune my car. I eventually want to put in a modarate cam- I know after a cam you deffinatly need tuning.
I am leaning towards a-tap, just because I can use it with other cars and it is much cheaper.

mods are: PS cooler, lid, fernco, jethots (in next week), GMMG.
2000 z28 m6 43000mi

Anytime you install headers it is a good idea to do some data logging as most times it will have an adverse effect on your A/F ..... Atap is a good choice if you want to scan other makes but I like EFIlive for my TA, it does appear to log faster and I think it is easier to use and setup PIDs :)

[horist]

Can you benefit: yes

How much: prolly not alot....

Really it depends on how much the shop you're looking at will charge to tune your car....

After I put my 382 stroker in my car I had it dyno tuned... and they got alot of power out of it over the stock tune... so to me it was worth the 450 it cost to have it dyno tuned....

However in your case... w/headers really being your only mod that changes a/f significantly... a dyno tune probably wouldn't be worth the gain...


So.. what kinda tune are you thinking of? mail order (from whom?) , going to a shop for a "quick tune" (which shop), or something else?


I would advise against getting ls1 edit... it's not very intuitive and hard to use w/out the proper tools (wideband O2) ... HPTuners.com seems to have a better solution coming out ... but even that isn't for a casual tuner...

If you want to get a logging tool... then definetly go EFI Live... it IS faster than autotap (even V2) and it's tailored for LS1s (as the old saying says... jack of all trades, master of none)

A logging tool is useful regardless of needing tuning though... only true way to tune a car is on a dyno w/wideband O2 ...

Edit:
PIDs were mentioned too... I don't know the exact acronym (first thing that pops to mind is Process ID) ... but for anyone that doens't know what this means...

picture your car's communication to you (from the cable to the laptop) as a bus... it can transport a full bus load of average sized people (data) to you in xxx seconds (in case of OBDII logging it's milliseconds) ... well... if you get a bus load of fat people (multi byte PIDs) you can't carray as many people from start to finish..... but if you get a bus load of supermodel skinny people you can transport more people!

EFI Live manages this transport much better... and IS faster than any generic tool in production now

[smiley]

don't forget you will need both...

atap is a data logger (scan tool).
edit is the programmer.

[BurnEm]

LOL horist- great bus analogy!
I think I am going to wait on tuning until I get a cam.

[WAHUSKER]

My suggestion is go dyno it after headers (wideband so they can tell you where your a/f is). Maybe you're fine. If it's too fat (rich) then you can buy a tuner (LS1 Edit or EFI Live or Predator or ?) &/or you can buy one of the dreaded bolt-ons that leans your car out but make it faster yet. MAF ends come to mind (it dropped .25 seconds off my et, but made my car VERY lean).

I highly doubt your car will be lean after headers. But if it is, TUNE IT! Lean is BAD!!!