Fiat 124 Spider Forum banner

1 - 20 of 46 Posts

·
Registered
2019 Clasica
Joined
·
72 Posts
Discussion Starter #1

The Chipbox by Seletron is a simple power adder. On the 124, it connects to the Boost Absolute Pressure Sensor (Bosch 281002996, PREX1), Intake Manifold Pressure Sensor (Bosch 281006028, PREX2), and the wastegate solenoid (Pierburg valve). The box intercepts data from these sensors and manipulates it to produce more power.

I emailed Seletron asking them for more info on the box’s operation, and received this reply:
Fuel trim is a consequence of the manipulation of the air pressure signals Prex1 and Prex2 and pierburg valve.
By letting more air inside the combustion chamber the fuel quantity has also to increase in order to maintain an optimal fuel-air ratio (the lambda sensor will inform the ECU that it has to compensate).
Furthermore, the ignition timing is also adjusted by the ECU to prevent misfires and, again, make sure that the combustion is complete.
Based on this very high level explanation, I assume it just shoves more air into the engine and lets the ECU’s built in closed loop feedback do the adjustments.

Amusingly the packaging proudly touts that it is made in Italy, however the Chipbox itself sports a China Export mark.


The installation instructions are a bit simplistic. More details would have been nice, but I’ve resolved that issue for y’all with the video above. Overall the installation was easy. It took around 30-45 minutes, most of which was spent getting access to the Boost pressure sensor.

The good news is it did make a measurable difference in acceleration. I captured the 40-60mph, 60-80mph, and 80-100mph times while in 4th gear. This provided nice coverage of the rev range from 2400rpm to redline. Results posted below… It averaged a a 17% increase on the top end, which if we extrapolate from the factory horsepower of 160, gives us ~187hp. Not too bad for a few hundred dollars and 30 minutes of work.


 

·
Registered
Joined
·
1,264 Posts
Very nice! Yep they really are superb bang for buck. Great explanation as well.

My 40-60 in 4th is 3.7 with my current mods so shows these boxes basically take you to phase 1 for very little outlay

You should do 25-62 in 2nd if you have an auto as some people on here have posted their times for that run for p1 and p2 so will give you sometbjbg to compare to.
 

·
Registered
2019 Clasica
Joined
·
72 Posts
Discussion Starter #3
Very nice! Yep they really are superb bang for buck. Great explanation as well.
Thanks!

My 40-60 in 4th is 3.7 with my current mods so shows these boxes basically take you to phase 1 for very little outlay
That's good to know. The only other mod I have is the open axle back from AutoRicambi, which I doubt does a whole lot for performance. It's more of a sound mod ;)
 

·
Registered
Joined
·
85 Posts

The Chipbox by Seletron is a simple power adder. On the 124, it connects to the Boost Absolute Pressure Sensor (Bosch 281002996, PREX1), Intake Manifold Pressure Sensor (Bosch 281006028, PREX2), and the wastegate solenoid (Pierburg valve). The box intercepts data from these sensors and manipulates it to produce more power.

I emailed Seletron asking them for more info on the box’s operation, and received this reply:

Based on this very high level explanation, I assume it just shoves more air into the engine and lets the ECU’s built in closed loop feedback do the adjustments.

Amusingly the packaging proudly touts that it is made in Italy, however the Chipbox itself sports a China Export mark.


The installation instructions are a bit simplistic. More details would have been nice, but I’ve resolved that issue for y’all with the video above. Overall the installation was easy. It took around 30-45 minutes, most of which was spent getting access to the Boost pressure sensor.

The good news is it did make a measurable difference in acceleration. I captured the 40-60mph, 60-80mph, and 80-100mph times while in 4th gear. This provided nice coverage of the rev range from 2400rpm to redline. Results posted below… It averaged a a 17% increase on the top end, which if we extrapolate from the factory horsepower of 160, gives us ~187hp. Not too bad for a few hundred dollars and 30 minutes of work.


That's a nice review. Well done. And I see you've found my weekend scooter therapy route!
 

·
Registered
2019 Clasica
Joined
·
72 Posts
Discussion Starter #6
So what I thought was a China Export mark is actually a European certification mark. They look very similar. Sneaky bastards...
 

·
Member
Joined
·
822 Posts
Great review of the Chipbox. Auto Ricambi has been selling these for some time now and have had lots of good feedback on them. For the money, it is a good way to get a boost in performance without the hassles of flash tuning.

Add the Pedal Booster and things get even better from a fun point of view. These two products work really well together to make the car more fun.

If you are about shaving tenths of a second off of your times, go the flash tune route. if you just want to have more fun driving your Spider without the hassle and at a lower cost, this Seletron route is the way to go.
 
  • Like
Reactions: DanB

·
Registered
Joined
·
2,591 Posts
Very nice. This is the kind of thing I like to see. Glad the Chipbox is proving to worth the money.
 
  • Like
Reactions: DanB and Brett67

·
Registered
2019 Fiat 124 Spider Lusso
Joined
·
134 Posts
Great video! very useful to see how to easily get to hat bottom sensor. Nice little bump!
 

·
Registered
2019 Clasica
Joined
·
72 Posts
Discussion Starter #12
Yep. 971 between Granger and Weir is fun fun fun. While on the scoot, I use all the side and back roads to wind my way back to PTown. (100/120/1660)
Yeah I like 1660 a lot, too. Messed up with construction right now, tho... You ever take 1331 further east, then 908 into Rockdale? I saw a few scooters at one of the restaurants in Rockdale maybe a week ago. Looked a bit out of place :ROFLMAO:
 

·
Registered
Joined
·
85 Posts
Nope, haven't gone past the dam on the scoot. 1331 runs a little fast for the little 250cc. It'll do it, but this rider gets pushed around too much in the wind at 70+ mph.
 

·
Registered
Joined
·
77 Posts
This product review really sets the gold standard on here. Got the visuals, manufacturer's feedback, and most importantly the quantitative data WITH baseline runs. Folks should take note. There's no reason to puff up a product unless you can produce something like this. Very impressive.
 

·
Banned
Joined
·
2,947 Posts
  • Like
Reactions: DanB

·
Registered
Joined
·
75 Posts
@DanB - Awesome review! I'm a happy ChipBox owner as well. Have you opened it up and played with the 2 dials to tune it further? I've been pretty happy with the default setting so I haven't touched it but I may get the itch if I get bored.
 

·
Registered
2019 Clasica
Joined
·
72 Posts

·
Registered
Joined
·
3 Posts

The Chipbox by Seletron is a simple power adder. On the 124, it connects to the Boost Absolute Pressure Sensor (Bosch 281002996, PREX1), Intake Manifold Pressure Sensor (Bosch 281006028, PREX2), and the wastegate solenoid (Pierburg valve). The box intercepts data from these sensors and manipulates it to produce more power.

I emailed Seletron asking them for more info on the box’s operation, and received this reply:

Based on this very high level explanation, I assume it just shoves more air into the engine and lets the ECU’s built in closed loop feedback do the adjustments.

Amusingly the packaging proudly touts that it is made in Italy, however the Chipbox itself sports a China Export mark.


The installation instructions are a bit simplistic. More details would have been nice, but I’ve resolved that issue for y’all with the video above. Overall the installation was easy. It took around 30-45 minutes, most of which was spent getting access to the Boost pressure sensor.

The good news is it did make a measurable difference in acceleration. I captured the 40-60mph, 60-80mph, and 80-100mph times while in 4th gear. This provided nice coverage of the rev range from 2400rpm to redline. Results posted below… It averaged a a 17% increase on the top end, which if we extrapolate from the factory horsepower of 160, gives us ~187hp. Not too bad for a few hundred dollars and 30 minutes of work.


Just wanted to say thanks for the install video. Taking off the tire and well skirt makes all the difference in the world when it comes to connecting PREX1! My "fat meat hooks" thank you! 🤣

Love the Chip Box as well. Makes an already fun car even more of a blast.

Chris
 

·
Registered
Joined
·
75 Posts
Just wanted to say thanks for the install video. Taking off the tire and well skirt makes all the difference in the world when it comes to connecting PREX1! My "fat meat hooks" thank you! 🤣

Love the Chip Box as well. Makes an already fun car even more of a blast.

Chris
Giving up on the PREX1 install and paying $100 for a local auto place to install everything and neatly zip-tie wires and mount the ChipBox was the best money I've spent. Trying to do it myself caused me to fly into a rage that can't be measured in terms of money.
 
1 - 20 of 46 Posts
Top