Today, I will begin the install of a RaceChip GTS on my car. I'll take some pics along the way, and update on thoughts & performance post-install. The company claims to eek out another ~41HP and 61lb-ft of torque on the 2.5L turbo, boosting it to 331hp & 483 ft-lbs. Let's see what it can do.
RaceChip GTS Install on a 2024 K5 GT / GT1
Trollwerks
21 - 40 of 93 Posts
What app do you use to measure performance? The only one I have tried recently is Track Addict.
Other than putting the car on a dyno and getting your wheel HP, the only other real way to measure HP is to check your 1/4 mile speed and the track with the RaceChip installed and with it un-installed.
Don't have the ability to go to a 1/4 mile drag strip, then get yourself a 'Dragy'. The Dragy is very very very accurate in showing correct elapsed time and speed.
$179 . . Read all about it here: Dragy Motorsports
You buy the Dragy and download the free cellphone app (very easy to use). It is not dedicated to only your car. You can let other friends use it too.
Start at 5:45 Time:
Don't have the ability to go to a 1/4 mile drag strip, then get yourself a 'Dragy'. The Dragy is very very very accurate in showing correct elapsed time and speed.
$179 . . Read all about it here: Dragy Motorsports
You buy the Dragy and download the free cellphone app (very easy to use). It is not dedicated to only your car. You can let other friends use it too.
Start at 5:45 Time:
First run with a chip:
Admittedly there is nothing scientific about this. This is starting from an overpass so I had a little help from gravity. I gotta find a good flat place to do some before (without) and after (with racechip) runs. I'm not really trying to do a bunch of runs in the dark on unfamiliar terrain. I'll try to do some more this weekend. FWIW, this 13.4@105) is a quicker ET than my stock '98 Z28 A4 w/ 2.73s or '02 WS6 M6 w/ 3.42s. (~13.75 @ 104)
In the second video the Mustang's steering wheel would drive me crazy! Can't believe he doesn't fix it - 90 degrees off...
Any further feedback? How is the car performing?
So far, so good. It is very street worthy. I didn't experience the all-or-nothing that you did. Maybe it's an updated data set or maybe it's because I'm on 2.5T, idk. I'll have some more data soon. I just got a Dragy today, and I'm headed to the drag strip on Friday.
beautiful carsTrollworks ... I see you had an 02 Trans Am and a 98 Z28:
Here is a photo of my 98 Trans Am that I bought new back in 1998 and a friends 98 Z28 SS (modified with twin turbos)
![Image]()
![Image]()
I'm hoping you break into the high 13s...
Watch your wheel spin!
On proper tires the GT gets 13.7 @108mph ....stock.I'm hoping you break into the high 13s...
Proper launch is crucial. I don't bother with 1/4 times cause of the lack of lsd. Just with a jb4 and downpipe a friend of mine was able to achieve 4.1.secs 0-60 and said there was wheel spin.
These cars shine from 30mph 40mph and on..
Fun car to drive for sure.
Also seen sonata nline gap q50rs charger scat pack s4 and so on just with premium fuel and lap3 pro tunner. Great powertrain.
I've seen automotive articles where K5s turned low 14s @104mph stock too. I think it's all about off-the-line tire control.
Ok... I had the chance to do nine quality runs today with RaceChip installed and my new Dragy, and I'm a little disappointed. The weather was cloudy, windy, dry pavement but humid air, cool for central TX ~65*F. Tire pressures were 35-37psi all around. The run had a slight decline ~-0.35-0.69 degrees depending on which calculation you believe. The run was basically the same every time. I did some runs with launch control off, some with it on, some with RaceChip off, some with it on Race setting, either level 5 or 7...
60 ft: 2.43-2.50s
330 ft: 6.14-6.27s
1/8 mi: 9.12-9.29s @81.68-83.36 mph
1.000ft: 11.66-11.88s @94.58-96.61 mph
1/4 mi: 13.79-14.06s @103.58-105.57 mph
The first run of the day was the best run. It's the one that yielded a 13.78s @ 105.57mph. I rolled straight from the highway to my secret test strip. RaceChip was already on and set to Race level 5. It went downhill from there. I was unable to duplicate or exceed the result and I also wasn't able to tell much difference between having RaceChip on or off. My next 2 runs were with RaceChip off to get a baseline. I ran a 13.82 at 104.97 and 13.89 at 104.29. You could maybe argue it was worth a tenth of a second in ET and maybe 1.3 mph in trap speed; certainly not what I was expecting from a chip that claimed to add 41 HP and 61 Torque. I boosted the Race setting from 5 to 7, and my times got slightly worse: 3 runs yielded ETs from 13.86-13.96 at 103.58-104.87 mph. After thinking about it, maybe it was from excessive wheel spin at lower speeds, but the 60 ft numbers were so close - hundredths of a second from best to worst, it almost didn't matter. It has me wondering if it's connected correctly or if it was even on. My 7th and 8th runs were with the RaceChip set to 7 and launch control off. I got lots of wheel spin and my worst 60 ft times (2.48s and 2.50s) but surprisingly still within hundredths of a second of my best with launch control on (2.42s). My last run was RC on 7, launch control 13.89 at 105.48.
RaceChip doesn't like to connect while my phone is connected to my K5. It hangs in the "connecting" phase indefinitely more often than not. I found that I can best connect when I have the car turned off, and turn the K5 and my phone's Bluetooth on at the same time, before my phone connects to the K5. My phone, a Samsung Galaxy S22 Ultra runs Bluetooth 5 and should be able to connect to multiple devices. It connects to the K5 and Dragy reliably every time with ease. It's only the RaceChip that gives me trouble. If you don't even have the car on, the screen around the buttons goes black. When it's connected, the screen is orange.
The K5 launch control sucks too. Sometimes, it wouldn't let me get into LC, saying, "Launch Control Conditions Not Met". Sometimes it would. The results weren't too different either way. There was still some wheel spin with launch control on and I found I could almost modulate the throttle as well as launch control.
Either way, my ETs and trap speeds seemed to get worse the more I ran. Maybe it's from increasing humidity, or maybe my engine compartment was getting hot or maybe it's because of the excessive wheel spin. I don't know, but I do know RaceChip didn't give me the WOW factor I was looking for today.
Conclusion: I'm currently undecided if RaceChip even works at all but the K5 may benefit from better /stickier tires up front.
Way forward: I will reach out to RaceChip to see what they say about the connection issue and the performance stats. I may try a few more runs with less pressure in the front tires, and maybe higher pressure in the back. RaceChip has a 30 day money-back guarantee and if I don't see some differences, I may test that guarantee.
60 ft: 2.43-2.50s
330 ft: 6.14-6.27s
1/8 mi: 9.12-9.29s @81.68-83.36 mph
1.000ft: 11.66-11.88s @94.58-96.61 mph
1/4 mi: 13.79-14.06s @103.58-105.57 mph
The first run of the day was the best run. It's the one that yielded a 13.78s @ 105.57mph. I rolled straight from the highway to my secret test strip. RaceChip was already on and set to Race level 5. It went downhill from there. I was unable to duplicate or exceed the result and I also wasn't able to tell much difference between having RaceChip on or off. My next 2 runs were with RaceChip off to get a baseline. I ran a 13.82 at 104.97 and 13.89 at 104.29. You could maybe argue it was worth a tenth of a second in ET and maybe 1.3 mph in trap speed; certainly not what I was expecting from a chip that claimed to add 41 HP and 61 Torque. I boosted the Race setting from 5 to 7, and my times got slightly worse: 3 runs yielded ETs from 13.86-13.96 at 103.58-104.87 mph. After thinking about it, maybe it was from excessive wheel spin at lower speeds, but the 60 ft numbers were so close - hundredths of a second from best to worst, it almost didn't matter. It has me wondering if it's connected correctly or if it was even on. My 7th and 8th runs were with the RaceChip set to 7 and launch control off. I got lots of wheel spin and my worst 60 ft times (2.48s and 2.50s) but surprisingly still within hundredths of a second of my best with launch control on (2.42s). My last run was RC on 7, launch control 13.89 at 105.48.
RaceChip doesn't like to connect while my phone is connected to my K5. It hangs in the "connecting" phase indefinitely more often than not. I found that I can best connect when I have the car turned off, and turn the K5 and my phone's Bluetooth on at the same time, before my phone connects to the K5. My phone, a Samsung Galaxy S22 Ultra runs Bluetooth 5 and should be able to connect to multiple devices. It connects to the K5 and Dragy reliably every time with ease. It's only the RaceChip that gives me trouble. If you don't even have the car on, the screen around the buttons goes black. When it's connected, the screen is orange.
The K5 launch control sucks too. Sometimes, it wouldn't let me get into LC, saying, "Launch Control Conditions Not Met". Sometimes it would. The results weren't too different either way. There was still some wheel spin with launch control on and I found I could almost modulate the throttle as well as launch control.
Either way, my ETs and trap speeds seemed to get worse the more I ran. Maybe it's from increasing humidity, or maybe my engine compartment was getting hot or maybe it's because of the excessive wheel spin. I don't know, but I do know RaceChip didn't give me the WOW factor I was looking for today.
Conclusion: I'm currently undecided if RaceChip even works at all but the K5 may benefit from better /stickier tires up front.
Way forward: I will reach out to RaceChip to see what they say about the connection issue and the performance stats. I may try a few more runs with less pressure in the front tires, and maybe higher pressure in the back. RaceChip has a 30 day money-back guarantee and if I don't see some differences, I may test that guarantee.
Best run:
![Image]()
5.61s
Traction issue. At the track you'd get better results.
89 octane or 93 octane fuel?
Careful with tire pressure - by chance did you look at your tire marks? What did the mark look like - solid across? Street tires are not like racing tires - if you reduce pressure you end up loosing more tread surface and have a potential to spin the wheel in the tire.
Your first run was most likely your best because your tire was hot from driving there.
21 - 40 of 93 Posts
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