If 10%, the IS would have the worlds most efficient drivetrain. hahah.

Question for TTI: does Stage 1 tune eliminate the 30% throttle delay? Or only Stage 2? Seems to me the price would be worth it to eliminate that delay alone.

 

I Agree


Yes both tunes are designed to reduce the throttle delay (Stage 2 more). The TTI re flash will give you a nice power increase in both Stage 1 or Stage 2 (over stock) and makes the car a whole lot more fun to drive!

 

not to answer on behalf of TTi but from what I know from working closely with Tony Stage 2 and above only can eleminate that, reason for not having it fully removed in stage 1 is as the following.

Removing the throttle limiter will allow boost to build very quickly, and in turn if u have a restricted exhaust system or a stock DP this will simply be setting your turbo to fail very soon due to sudden built of allot of back pressure, ultimately thats the reason Stage 2 comes with clear recommendation of installing the DP

Nuke

 

i'm not saying it IS 10%...i'm saying if 241 is to be believed it is. something's amiss.

 

The real truth is that my car is the JDM spec IS200t so it came with more power from the factory. j/k

More progress to come, but in the meantime we can enjoy what TTI is currently offering us.

 

Manufacture claims, particularly with turbos, should be taken with a grain of salt. They're usually underrated. Also, all kinds of dynos are all over the place.

In other tuning worlds.. Burger dyno'd Q50 red sport 374/397 to the wheels. tuned to 405/454.

 

Those 3.0 Q50's are V6 TT, so its easy for them to make power. Plus, Burger tuning is running them on E30 and E85 mixtures for their dyno results. The Infiniti 2.0t's are no where near our 8AR-FTS motor.

 

The infinity's 2.0t are mercedes engines. They are pushing 211 hp and around 260 tq which is decent. My buddy has a CLA250 4matic thing is quick mostly because is torquey and it weights only 3300. on the other hand infinity q50 weights close to 3700.
Somebody told my friend that with full bolt on's and a dyno tune he would be pushing close to cla45 amg power.

Makes me think also that we are pushing 19 psi with stage 2 but only reaching 245 whp (in my case) its problably because of the turbo? i dont know much about tuning i'm only waiting on more R & D lol

I found this video in which they claim 318whp on a cla 250 with the following mods

HG Motorsports Performance Cold Air Intake
HG Motorsports Performance Intercooler
HG Motorsports Performance 2.5 In Turbo Back Exhaust System w/ downpipe
HG Motorsports Performance ECU Tune
Blow-Off Valve
Dyno Tuned at 318WHP
This car is running 11 psi of boost pressure.

 

oh ya there's 2.0 Chevy Cobalts running around with 500wheel stock insides lol.

 

Took a test drive on the CLA once when i was shopping around for a car and there was lots of cheap plastic all around, the performance version was a beast though. For a more solid car, the C class is a better investment and has stronger resale value. The difference in price between the CLA and C-Class isn't all that prohibitively different, imo. But the interior feel is worlds apart.

 

that HP on 11psi suggest a larger turbo. it just literally flows more CFM.

maximum turbo cfm output = (3.14)(turbo compressor wheel size ÷ 2)2
3
maximum turbo boost in psi = (14.7 psi)(maximum turbo cfm output)
engine cfm

https://www.turbobygarrett.com/turbo...mass_flow_rate

No more guessing games, just find the variables and you can find out what the estimated max power for our engine and turbo is. My guess is the stock turbo is very small and with the stage 2 tune it is getting pretty close to its maximum efficiency and there isn't a ton left on the table. The dynos show a total under the curve change but not significant max hp and TQ gains. I think most people will love the fact that the pedal will feel more linear and not restricted. However dreams of making alot more power on this stock turbo seems far fetched as minimal maximum gains were found with added boost. The Stage 2 tune is like 4+ extra psi and more aggressive tuning right? +20whp gain and +4psi seems like its running out of breath at 5whp per added psi, or maybe that is normal im not sure. Either way the maximum boost this turbo can do needs to be found out to know how much more room it has in its stock form.

 

Thanks for the Info!
I do believe that the stock turbo can be pushed a little more, so lets see what happens. There is an issue with knocking at higher boost levels and Tony is doing some more research to resolve this.

 

yeah i'd go C-Class. everyone who comes into contact with CLA hates it. Rides hard, cheap materials etc.

 

I don't know about that. my friends CLA rides real good i dont know if the 4matic has something to do with it i doubt it. but the car is really nice i wouldn't get one tho i don't like the styling very much

 

Thats good news, hopefully he solves that and we get a little more of much needed boost!.