Prototype / Race Chip - Status and review
I also just received my RaceChip throttle tuner. First off it has 6 different stages, and it has in my opinion, 3 levels, and there are 2 settings per each level. Now stage 1 & 2 are in their words "gas effiency". IMO stage 1 is completely useless on a publics highway because it retards the the throttle Input signal so drastically, that you will have a hard time accelerating from a dead stop. Stage 2 is around that same category so those 2 has efficient stages IMO are useless. Now stage 3 feels similar to the car being set on "E" but with quicker response on throttle input and has cured that lag associated with being in "E" mode, and then stage 4, again, feels similar to the car being in "s" mode but with more of a punch. Now the real fun begins........
Upon having the car set on stage 5, it really makes your car feels like it has an additional 50 HP and 50lb ft of torque. My car does have a few mods, so that could ad to the reason why I felt like I had an additional 50 hp and 50 torque.
The reason behind it,is because stage 5 and 6 are how sports mode in super are are suppose to be. There's no delay in acceleration what so ever, and I e noticed it has great points where it down/up shift at, but the Mai. Thing is that it makes the car accelerate so quickly that it eliminates turbo lag! I noticed that my turbo gauge was flying from 1 then to 10 psi with applying light pressure and since it responds quick you are able to transfer all your HP and Torque to the pavement easily. I only use stage 6 for racing because the cars turbo likes to go from 1 to 17psi very quickly and easily. I'm sorry that I can't offer any comparison against the sprinter because this is the only throttle tuner I bought, but I can say that if you bought the BMS tuner and think it cures the throttle lag, you'll definitely feel a huge difference, and I mean HUGE with this tuner. Anyways, that's my opinion on this product, and I am selling my BMS tuner as well , if anyone wants to pick up a used one for cheap message me. I am going with a vivid, brabus, or race chip tuner. If you guys have any questions at all feel free to ask.
A true cold air intake would be a tube running from the turbo compressor inlet to a cool location (like the wheel well or other area outside of the hot engine compartment) and a filter on the end of that. I am glad to see some new developments no matter how flawed though.
Now about the tuning chip, does that only effect throttle response? Basically increasing TPS data to make the car react more quickly? What makes that different from just mashing the gas harder and faster? Does it remove the latency of throttle input to actual response or just turn 15% throttle input into 50% throttle input and so on by increasing TPS percentages? How does this address the lethargic transmission response time?
Sorry so many questions, just trying to gain an understanding of how it works and what it's actually doing. Again glad to seem some new product development for this platform and thanks for your info, input, and application of such developments. Very exciting!
Last edited by 2014 C250; Sep 17, 2015 at 06:28 AM.
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It doesnt ad any HP, but the car response faster.
I had a Racechip chiptuning box (so not this pedal box) , never again , much error codes!!
The Best of Mercedes & AMG
Last edited by 2014 C250; Sep 17, 2015 at 04:22 PM.




An option is to have your stock turbo modified, but I still think the A45 turbo looks very attractive. If you could control boost yourself by bypassing the stock boost solenoid and using an MBC (manual boost controller). Set boost low so the fuel system can keep up. Trouble spot will be overcoming the overboost code.
https://mbworld.org/forums/c-class-w...stage-1-a.html
https://mbworld.org/forums/c-class-w...stage-1-a.html



