performance chips?

[Z1NONLY]

I just won an "uprev" dyno tune and I'm not sure I want it.

My Z has been dyno'd three times and has got better numbers than other stock Z's (same day, same dyno) every time.

The gap between my Z and the closest Z has been anywhere from 10 to 20hp.

It's not a big HP difference, but with an already high-strung N/A motor like the VQ in my Z, people spend a lot of money to get 10hp.

I am considering turning down a tune that is worth hundreds of dollars because I don't want to risk messing up a good thing.

[Obsidian]

I just won an "uprev" dyno tune and I'm not sure I want it.

My Z has been dyno'd three times and has got better numbers than other stock Z's (same day, same dyno) every time.

The gap between my Z and the closest Z has been anywhere from 10 to 20hp.

It's not a big HP difference, but with an already high-strung N/A motor like the VQ in my Z, people spend a lot of money to get 10hp.

I am considering turning down a tune that is worth hundreds of dollars because I don't want to risk messing up a good thing.

It's always nice getting a factory freak . I once did a dyno day with a bunch of guys when I had my 2003 Evo ... I was crushed mine was 2 AWHP lower than everyone elses. That was stock though ... by the time I was done modding that thing the 2 hp didn't matter much, LOL.

[The Chariot]

I have a similar question. I "received" a 2000 Dodge Ram 1500 pickup. I apparently made a mistake. I allowed the owner to hook up some sort of meter or device to the pickup, and download a program. I don't know if he erased the program or not. I gave the Bubba truck to my daughter as her first car, figuring if it wrecks, no loss and it will protect her with its size. What do I do? I have no idea what chip is installed, or what program is installed or erased. I don't even know if it had any value in the first place.

There's a good chance he was returning it to stock tuning when he connected it. That's the only way he could resell the tuner, because they won't tune another vehicle until they've "unlocked" by returning the tune to stock. If you don't have to run premium feel, its also a good indicator that its running the stock tune. One thing which may help is if you know someone with a Dodge tuner. Get them to connect it to your vehicle and read the calibration ID. Post that here, if we're both still around and remember this thread, and I'll look it up for you.

[The Chariot]

I just won an "uprev" dyno tune and I'm not sure I want it.

My Z has been dyno'd three times and has got better numbers than other stock Z's (same day, same dyno) every time.

The gap between my Z and the closest Z has been anywhere from 10 to 20hp.

It's not a big HP difference, but with an already high-strung N/A motor like the VQ in my Z, people spend a lot of money to get 10hp.

I am considering turning down a tune that is worth hundreds of dollars because I don't want to risk messing up a good thing.

It's always nice getting a factory freak . I once did a dyno day with a bunch of guys when I had my 2003 Evo ... I was crushed mine was 2 AWHP lower than everyone elses. That was stock though ... by the time I was done modding that thing the 2 hp didn't matter much, LOL.

Question, how long did your vehicle sit before it was dyno'd? Heat soak robs power from both NA and forced induction. Often times your position in the line at a dyno day can have an impact, positive or negative. That's one of the reasons why things like measuring oil temps and IATs are helpful for comparison data of multiple runs on a dyno with the same vehicle.

[Radar]

I have a similar question. I "received" a 2000 Dodge Ram 1500 pickup. I apparently made a mistake. I allowed the owner to hook up some sort of meter or device to the pickup, and download a program. I don't know if he erased the program or not. I gave the Bubba truck to my daughter as her first car, figuring if it wrecks, no loss and it will protect her with its size. What do I do? I have no idea what chip is installed, or what program is installed or erased. I don't even know if it had any value in the first place.

There's a good chance he was returning it to stock tuning when he connected it. That's the only way he could resell the tuner, because they won't tune another vehicle until they've "unlocked" by returning the tune to stock. If you don't have to run premium feel, its also a good indicator that its running the stock tune. One thing which may help is if you know someone with a Dodge tuner. Get them to connect it to your vehicle and read the calibration ID. Post that here, if we're both still around and remember this thread, and I'll look it up for you.

Ok, thanks. I'll try to do that.

[Obsidian]

I just won an "uprev" dyno tune and I'm not sure I want it.

My Z has been dyno'd three times and has got better numbers than other stock Z's (same day, same dyno) every time.

The gap between my Z and the closest Z has been anywhere from 10 to 20hp.

It's not a big HP difference, but with an already high-strung N/A motor like the VQ in my Z, people spend a lot of money to get 10hp.

I am considering turning down a tune that is worth hundreds of dollars because I don't want to risk messing up a good thing.

It's always nice getting a factory freak . I once did a dyno day with a bunch of guys when I had my 2003 Evo ... I was crushed mine was 2 AWHP lower than everyone elses. That was stock though ... by the time I was done modding that thing the 2 hp didn't matter much, LOL.

Question, how long did your vehicle sit before it was dyno'd? Heat soak robs power from both NA and forced induction. Often times your position in the line at a dyno day can have an impact, positive or negative. That's one of the reasons why things like measuring oil temps and IATs are helpful for comparison data of multiple runs on a dyno with the same vehicle.

That was actually the tuners explanation ... I brought it in hot ...Orange County to LA and I was flying to try and make it on time. It only sat for 15 minutes, and the Evo generates some serious heat anyway. Still, nobody wants to be the low man of the day.

[Z1NONLY]

I just won an "uprev" dyno tune and I'm not sure I want it.

My Z has been dyno'd three times and has got better numbers than other stock Z's (same day, same dyno) every time.

The gap between my Z and the closest Z has been anywhere from 10 to 20hp.

It's not a big HP difference, but with an already high-strung N/A motor like the VQ in my Z, people spend a lot of money to get 10hp.

I am considering turning down a tune that is worth hundreds of dollars because I don't want to risk messing up a good thing.

It's always nice getting a factory freak . I once did a dyno day with a bunch of guys when I had my 2003 Evo ... I was crushed mine was 2 AWHP lower than everyone elses. That was stock though ... by the time I was done modding that thing the 2 hp didn't matter much, LOL.

Question, how long did your vehicle sit before it was dyno'd? Heat soak robs power from both NA and forced induction. Often times your position in the line at a dyno day can have an impact, positive or negative. That's one of the reasons why things like measuring oil temps and IATs are helpful for comparison data of multiple runs on a dyno with the same vehicle.

The first time, (09/06) I was at the track on "test and tune" day. Me and the other Z were both making runs and decided to do a couple pulls on the portable dyno dynamcs that a vendor had brought to the track that day.

Both our cars had pretty much the same driving, only mine sat while his was on the dyno. They pulled his off and pulled mine on.

He got 234.7 and I pulled a 251.1

Next was at last years ZdayZ. Again, another dyno dynamics portable unit (different dyno and vendor though), but this one was nicknamed "The heart breaker".

On this dyno, Stock DE motor Z's (and there were a lot of them) were pulling in the teens. (21XHP, one got a 212)

My friend who has done most of the available bolt-ons and had his car tuned, was happy to see his car come in higher than the stock DE's with his running in the mid 130's.

Then my Z pulled a 237.7???

In this case the dynos were free so the wait was long. They were using a system of getting the next car in line out of it's parking space and letting it idle the whole time that another car was on the dyno. Warm-up time did vary a little from car to car, but not by much. And none of the cars had been driven for at least an hour.

The most recent one was on a "DYNOmite" AWD dyno. This was just this last weekend. Both my car and the other two Z's had been sitting in the parking lot for hours. However I did make sure I started my car two cars before I was due so that my car would be up to operating temp. (I don't think the other guys did this.)

In this case, an HR Z (two versions later than my DE and more powerful)pulled a 250 and the owner was unhappy about his number.

My DE Z pulled a 239, and a convertable DE Z pulled a 219.

[The Chariot]

Sounds like you got lucky and got a tight engine. Nice. Having done a lot of tuning over the years, I've seen a lot of variation in stock vehicles which should have had the same results but didn't. Now there are some things such as fuel quality, oil weight, air filter condition, wheel/tire weight, fuel filter condition and O2 sensor condition which can impact HP, but generally don't have huge differences. I've seen identical factory setups vary by 10% or more, so you're very fortunate you got a good one -- Hope your friends are jealous, heh heh.

[Z1NONLY]

Sounds like you got lucky and got a tight engine. Nice. Having done a lot of tuning over the years, I've seen a lot of variation in stock vehicles which should have had the same results but didn't. Now there are some things such as fuel quality, oil weight, air filter condition, wheel/tire weight, fuel filter condition and O2 sensor condition which can impact HP, but generally don't have huge differences. I've seen identical factory setups vary by 10% or more, so you're very fortunate you got a good one -- Hope your friends are jealous, heh heh.

I do have lightweight wheels. 16 lbs vs 24 lbs. For this last dyno, I also had a lighweight flywheel.

Either way, it's not a huge difference but I'll take it.

[cek]

The Mercedes AMG series of cars with the 6.2L motor (e.g. C63, E63, ...) all come with different tunes. Even the C63 comes "standard" with 451hp and with a performance package that gives 481hp. The only difference (really) is the ECU firmware. 30hp is nothing to joke at.

My '88 911 has a chip in it that I bought in 1997. I think I paid $150 for it. At best it gives me 5-10hp increase. I wouldn't be surprised if that same EPROM was available for close to $25...