Tuning Question
Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
Tuning Question
Guys i got a tech question here for you tuning experts. My vette was stock about two years ago 350 hp 98 ls1. Since buying it I did some work. I installed stainless long tube headers, removed the cats, installed o2 simulators, and bypassed the mufflers. Did the coolant bypass at the throttle installed a pioneer underdrive pully and a varaam intake, Tranny was also overhauled with 5 pinion planetary corvette sprag, the beast sunshell drum, 18 clutch zpack 3-4 clutch pack and a kevlar band, along wit a shift kit in the valve body. This thing gets loose everytime on the shift to 2nd with a standard rear end. I think that gets me over 400 hp correct me if i am wrong. Now i have never dyno'ed the car or custom tuned it, and i do not get any engine codes. What i like to know is if there is any tuning software i can use to tune my car for better performance, and the price.
Thanks,
Thanks,
Melting Slicks
Joined: Nov 2002
Posts: 2,884
Likes: 260
From: Jamison Pa
St. Jude Donor '11-'25
You need to Mod some more.
Tuning software is $500>. I thought about getting HP Tuners to make minor tweaks. There is also LS1 Edit, then you need a wideband setup to check the A/F ratio. It gets involved, but the support on the forum is good. Do you have a laptop to run the software? Right now I just let my tuner make the changes since I've made some pretty big changes.
BTW, the 98 C5 was 345 hp. this should be about 290-300RWHP. The mods you've done so far might be worth about 30-40 more.
Have you ever thought about a nice cam? Then get a tune.
The runflats are like driving on marbles. Try some good non run flat tires, it will make it feel better. It made my '00 feel totally different.
Bob K.
BTW, the 98 C5 was 345 hp. this should be about 290-300RWHP. The mods you've done so far might be worth about 30-40 more.
Have you ever thought about a nice cam? Then get a tune.
The runflats are like driving on marbles. Try some good non run flat tires, it will make it feel better. It made my '00 feel totally different.
Bob K.
Last edited by Bob K; Jul 19, 2007 at 08:14 AM.
Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
ok thanks for the update, yeah i have a laptop I do alot of computer architectural visualization for a living and we need to have some pretty up to date equipment. You mean 500 just in software given i have the computer? Can't i just get the software and an obd2 to used cable to do it. By the way is it really worth it, did you really feel the difference with the tune. I know i want to do the cam so bad maybe towrds the holidays in dec. my vette gets used 365 days a year.
let me know,
Ralph
let me know,
Ralph
Le Mans Master
Joined: Jan 2001
Posts: 5,785
Likes: 6
From: Lafayette Colorado
The cable and software is what runs $500+. The software/cable solution allows you to change all aspects of the PCM programming. The right tune for your car's setup can make a night and day difference. The software packages are very powerful and very complex.
There are hand held units for about $250 to $350. They will allow you to do minor changes to the PCM programming like adjusting shift points, shift firmness, setting the rev limiter, and do a power programming options( which just increase the timing a little ).
If you do a cam or any serious intake mods, you will need one of the software packages.
Keith
There are hand held units for about $250 to $350. They will allow you to do minor changes to the PCM programming like adjusting shift points, shift firmness, setting the rev limiter, and do a power programming options( which just increase the timing a little ).
If you do a cam or any serious intake mods, you will need one of the software packages.
Keith
Pro
Joined: Feb 2004
Posts: 508
Likes: 1
From: An Englishman drinking his way through Tewksbury MA
St. Jude Donor '09
Guys i got a tech question here for you tuning experts. My vette was stock about two years ago 350 hp 98 ls1. Since buying it I did some work. I installed stainless long tube headers, removed the cats, installed o2 simulators, and bypassed the mufflers. Did the coolant bypass at the throttle installed a pioneer underdrive pully and a varaam intake, Tranny was also overhauled with 5 pinion planetary corvette sprag, the beast sunshell drum, 18 clutch zpack 3-4 clutch pack and a kevlar band, along wit a shift kit in the valve body. This thing gets loose everytime on the shift to 2nd with a standard rear end. I think that gets me over 400 hp correct me if i am wrong. Now i have never dyno'ed the car or custom tuned it, and i do not get any engine codes. What i like to know is if there is any tuning software i can use to tune my car for better performance, and the price.
Thanks,
Thanks,
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
With the mods I di in my '98 it got me 322RWHP and 327 RWTQ,
I had, as a list:
VARARAM
Hi Flow Air Bridge
LG MAF Housing
Ported Polished TB
TB Bypass
LS6 Manifold
TI Z06 Exhaust
Hypertech Hand Held Tune
3.15 (Stock) Gears
Remember these are numbers at the Rear Wheel not at the motor!
If you have these things you should be close to what I was if not then your not at this time
See my sig at the bottom for the upgrades too that I did and where I'm at plus I am about ready to post on the latest results.
Thanks,Matt
I had, as a list:
VARARAM
Hi Flow Air Bridge
LG MAF Housing
Ported Polished TB
TB Bypass
LS6 Manifold
TI Z06 Exhaust
Hypertech Hand Held Tune
3.15 (Stock) Gears
Remember these are numbers at the Rear Wheel not at the motor!
If you have these things you should be close to what I was if not then your not at this time
See my sig at the bottom for the upgrades too that I did and where I'm at plus I am about ready to post on the latest results.
Thanks,Matt
Last edited by madmatt9471; Jul 19, 2007 at 10:53 PM. Reason: add hi flow airbridge
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Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
yeah we pretty much have got the same setup except i also have the long tube s.s headers and the under drive pully those two made a huge diffence. Even with the stock gears after those two things installed it went from a little peel out at the lauch to smoakin them so bad it would smack the rev limiter several times before hooking....i love it.
i am sure yours lauches hard too
ralph
i am sure yours lauches hard too
ralph
With the mods I di in my '98 it got me 322RWHP and 327 RWTQ,
I had, as a list:
VARARAM
Hi Flow Air Bridge
LG MAF Housing
Ported Polished TB
TB Bypass
LS6 Manifold
TI Z06 Exhaust
Hypertech Hand Held Tune
3.15 (Stock) Gears
Remember these are numbers at the Rear Wheel not at the motor!
If you have these things you should be close to what I was if not then your not at this time
See my sig at the bottom for the upgrades too that I did and where I'm at plus I am about ready to post on the latest results.
Thanks,Matt
I had, as a list:
VARARAM
Hi Flow Air Bridge
LG MAF Housing
Ported Polished TB
TB Bypass
LS6 Manifold
TI Z06 Exhaust
Hypertech Hand Held Tune
3.15 (Stock) Gears
Remember these are numbers at the Rear Wheel not at the motor!
If you have these things you should be close to what I was if not then your not at this time
See my sig at the bottom for the upgrades too that I did and where I'm at plus I am about ready to post on the latest results.
Thanks,Matt