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Has anyone come up with a chip for the standard XLR to make more h/p? I've put the corsa exhaust and am considering the air intake, but would like to get this car tuned for more performance. Your thoughts....:eek:cool
 

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There is no "chip" to add increased horsepower. Today's cars use flash chips for the engine control and vehicle control modules that can be over-riden using software to provide increased performance. This is the so-called tuning process about which I've made numerous posts on this forum. Please search and review those and post whatever other questions you may have.
 

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Where can you get the chips?
You already have the chips; flash memory is a reprogrammable way of storing computer data. Tuners plug into the port under your steering wheel and change the program whith a specialized computer. This is usually done on a dyno - car running in different configurations to fine tune the engine and drive train programs.

Stick with the factory version or plan on a couple of hundred for someone who knows what they are doing and knows how you want to drive.
 
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I may get mine tuned and dyno when I go back to Bowling Green. It's just another 1/2 day north, but what I'm worried about, what happens when you disconnect the battery or Cadillac does a computer overhaul............do we loose our tuning?
Probably, if I know anything about computers.
You already have the chips; flash memory is a reprogrammable way of storing computer data. Tuners plug into the port under your steering wheel and change the program whith a specialized computer. This is usually done on a dyno - car running in different configurations to fine tune the engine and drive train programs.

Stick with the factory version or plan on a couple of hundred for someone who knows what they are doing and knows how you want to drive.
 

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I may get mine tuned and dyno when I go back to Bowling Green. It's just another 1/2 day north, but what I'm worried about, what happens when you disconnect the battery or Cadillac does a computer overhaul............do we loose our tuning?
Probably, if I know anything about computers.

disconnecting the battery would not effect it, but if they "flash" the computer, it basically resets everything back to stock, including any "learned" driving habbits.
 
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That's what I'm worried about. Under what circumstances would they flash the computer?
disconnecting the battery would not effect it, but if they "flash" the computer, it basically resets everything back to stock, including any "learned" driving habbits.
 

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That's what I'm worried about. Under what circumstances would they flash the computer?


it's my understanding that there is a service bulliten out to flash it every time you come in for service. The learning capabilities of the computer are so good that with an aggressive driver (like myself) the car gets too smart (aggressive) and it became a liability issue. The service bulliten has been out for a long time, and I instruct my service writer to never flash my car, but they got me the last time I was in.:banghead
 
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Thanks Mike, guess you just saved me and Hans an extra two days to go to this motorsports place up in Michigan and a few hundred bucks. I owe you lunch, that would be my choice for the lunch, not yours. OH look, there's a penny on the ground.:lol :lol :lol [[email protected]


quote=1_XLR;17100]it's my understanding that there is a service bulliten out to flash it every time you come in for service. The learning capabilities of the computer are so good that with an aggressive driver (like myself) the car gets too smart (aggressive) and it became a liability issue. The service bulliten has been out for a long time, and I instruct my service writer to never flash my car, but they got me the last time I was in.:banghead[/quote]
 

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Extra HP on XLRV

I added an ECU that plugs in above the air sensor and with no other changes realized a 20 RWHP Gain as measured on a Dynojet with and without plugged in. The piece is easly installed and removed with standard plugs. Its been installed for about 3 months. Increase performance is noticable.
 

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I may get mine tuned and dyno when I go back to Bowling Green. It's just another 1/2 day north, but what I'm worried about, what happens when you disconnect the battery or Cadillac does a computer overhaul............do we loose our tuning?
Probably, if I know anything about computers.
The tuning should be stored in EEPROM. They should not be erased if battery is disconnected. For example, your key fob code is stored in the receiver in the car. Even if you loose battery, the receiver still has your key code stored in EEPROM and still recognize your key fob.
 

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What does it do to get the gain REDV?
I am not knowledgeable is the area of tuning, but I will share the little I know. It is my understanding that the ECU is intercepting the signal from the air sensor and modifying it prior to going to the main computer. The mechanics at the speed shop where I had the dyno performed were very impressed with the improvement / change. This was the first xlrv they had on the dyno so everyone stopped what they were doing to watch. When they ran the dyno they also monitored fuel air mixture and showed me on the graph how it changed / improved.
The ECU will be reflashed (changed to accommodate the increased air flow) as soon as I add the new air in-takes. They are not yet ready for sale. I am hoping they will be available before the B.G. trip. They will be similar to the Volant, in addition, they will produce replacements for the air intakes from the throttle body to the front. I paid $650.00 for the ECU and re-flash will be 100.00. The new air intakes combined with the ECU should result in 405RWHP. They are also making a pulley to increase boost.
 

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RedV

I don't have a V, but noticed a site that offered a "chip" similar to what you described, may be the same one, let me know. It's at a site called SLR Motorsports, sounds interesting but hard to believe. Big horsepower gain, better gas mileage, plug and play, uses signals to existing ECU. Anybody else seen or heard about this?
 

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This all sounds great and I was considering it until I read that Cadillac / GM will void your powertrain warranty if they find that the ECU programming has been modified. I guess I am stuck with stock for another three years!
 

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Performance Chip

This from the SLR Motorsports FAQ page:



Q: Will the SLR Motorsports Performance Chip void my vehicle's warranty?
A: NO! This is the best reason to add the SLR Motorsports Performance Chip to your vehicle! Most performance products will void your warranty, however the SLR Performance Chip will not void or negatively impact your vehicles warranty in any way!

This all sounds great and I was considering it until I read that Cadillac / GM will void your powertrain warranty if they find that the ECU programming has been modified. I guess I am stuck with stock for another three years!
 

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Interesting Link Klap,

After checking out the SLR Motorsports page, I noticed their info for every performance chip is generic, and that leads me to believe their statements regarding manufacturer's warranties could be also. As a general rule, GM dealerships aren't always amenable to doing warranty work on performance-modified vehicles when it comes to upgraded tuning. Just to CMA, I'd personally check with my Service Manager before adding any aftermarket tuning enhancements to ensure there won't be a hassle if the dealer discovers my car's programming has been modified. If their module plugs into the data port under the steering column, or another easy-to-reach conector, it would be easy enough to disconnect prior to taking the vehicle in for service.

There wasn't any dyno info either, which would be beneficial when making a buying decision. While reading the FAQ, I asked myself, "If this chip is so wonderous and adds HP and milage, why don't the manufacturer's tune the car accordingly?" This isn't black magic, and the performance gains/milage savings would be great for marketing.

Sure enough, under their "How it Works" section they ask the same question and give a fuzzy answer, without a real follow-up (I think the operative words are, "at any given RPM", but hate quessing) :

. . . So here’s the real question, why would vehicle manufacturers put a bad tune on each ECU that they build? Each manufacturer builds and constructs a vehicle to create the maximum HP and MPG at any given RPM for marketing and sale purposes. . . .

As someone much wiser once taught me when making claims: "Show me the data." Has anyone out there installed this mod in their XLR and had their car before/after dyno'd?

I'm not saying their claims are bogus, I just want to know how substanciated they are before considering this upgrade. Adjectives are nice, but data rules. In the meantime, I'll shoot them an email for XLR-specific data and post the results if they send me anything.

CC :cheers
 

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more hp

Ok, lets get serious about horse power/torque!

I don't care about warranties, I just want to be the first one across the intersection!:cool:seeya

Has anyone looked into dual turbos for the 4.6L VVT Northstar engine that's in my 06 XLR or NOS?

I've been thinking of replacing the stock engine with the GM ZZ572/720.

Anyone want to make me an offer on my stock engine? It only has 26k miles on it and gets 30mpg on the highway. We won't mention city mpg cause I don't due much of that in the XLR.

Jack
 

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h/P

A Note, burried in their literature, is the statement that their claims do not include supercharged or turbocharged cars. I thought this curious since they specifically itemize the XLR V. So, I sent them a note asking for clarification, that was a week ago, and I have not as yet heard back. So, caviat emptor!

Rusty

Interesting Link Klap,

After checking out the SLR Motorsports page, I noticed their info for every performance chip is generic, and that leads me to believe their statements regarding manufacturer's warranties could be also. As a general rule, GM dealerships aren't always amenable to doing warranty work on performance-modified vehicles when it comes to upgraded tuning. Just to CMA, I'd personally check with my Service Manager before adding any aftermarket tuning enhancements to ensure there won't be a hassle if the dealer discovers my car's programming has been modified. If their module plugs into the data port under the steering column, or another easy-to-reach conector, it would be easy enough to disconnect prior to taking the vehicle in for service.

There wasn't any dyno info either, which would be beneficial when making a buying decision. While reading the FAQ, I asked myself, "If this chip is so wonderous and adds HP and milage, why don't the manufacturer's tune the car accordingly?" This isn't black magic, and the performance gains/milage savings would be great for marketing.

Sure enough, under their "How it Works" section they ask the same question and give a fuzzy answer, without a real follow-up (I think the operative words are, "at any given RPM", but hate quessing) :

. . . So here’s the real question, why would vehicle manufacturers put a bad tune on each ECU that they build? Each manufacturer builds and constructs a vehicle to create the maximum HP and MPG at any given RPM for marketing and sale purposes. . . .

As someone much wiser once taught me when making claims: "Show me the data." Has anyone out there installed this mod in their XLR and had their car before/after dyno'd?

I'm not saying their claims are bogus, I just want to know how substanciated they are before considering this upgrade. Adjectives are nice, but data rules. In the meantime, I'll shoot them an email for XLR-specific data and post the results if they send me anything.

CC :cheers
 
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