Thanks for the feedback! I do want something with a slightly quicker spool and hopefully very linear, controllable power delivery for the track... Oh and FYI, my car is RWD so I couldn't have four wheel horsepower even if I tried!

Anybody else have a recommendation for me? Should I try the 16/24 hybrids with my current EVO K24 programming?

 

Kato,

Talk to Tom kerr about the k24/18G on the track. I don't track, but I do have the k24/18G and they are very responsive. At the RPM's you would be utilizing at the track, I think you would be in the power band at all times and have a lot more up top than with a 16/24. I went from K16/24's to K24/18G's and do not notice any difference in lag, in fact my K24/18G's seem less laggy than the 16/24 hybrids and from my observations, offer a lot more power everywhere in the power band. They are an awesome turbo and I think you would be thrilled with them.

 

If you have K24s just keep them... especially since you have the programming... I do not recommend mixing and matching ecus from one turbo with a another.. especially when we are talking about stock K24s and k24/18gs or even gt28 hybrids... bad idea. I lost 2 ecu programs just because I decided to switch... its the way things simply are...
As far as linear and smooth power delivery goes... well that has more to do with a custom tuner rather then a type of turbo you go with... or at least the ones mentions....
markski

 

very interesting thread, i have stage 4 set up too. while it runs great, i always want more.

couple questions for the experts out there.

current set up, k24's, europipe exhaust, b&b headers, diverter valves, giac programming, evo wastegates, pss9 susp, fikse 18" profiles, pccb gen ii

i do drive my car every day, also do 6 or 7 roadcourse events a year.

will k24/18g ruin a daily driver?

can i keep my giac program, or will i need new software too?

sorry for the redundant questions, but it is a little confusing.

thanks to all for any info.

bob

 

Formulab,

No you will have to get Proto programming (3K) for the 24/18's.

 

like sean said , you will need proto .programing and no it wont ruin your daily driver.

 

I just drove a turbo S last weekend. First Time I've every been in a car with K24s. I've been using GT28s for about 5 years. I could not believe how LINEAR the K24s are. Like the car was naturally aspirated. Absolutely no turbo surge what so ever. If LINEAR is what you want, LINEAR is what you have. Get a stage 4 EVOMS program, port and coat your headers and you're done!

 

Already there! I've got the stage 4 programming and Evo K24 headers...

I agree that they delivery is very linear right now (for a turbo car)... I'm not necessarily unhappy with the setup, I'm just looking for the next (minor) step that might yield me a bit quicker spooling and a bit more low/midrange push...

I'm very happy with the car so far, just seeing what else is within reach!

 

Sorry to bump an old thread. My Mercedes CL600 uses K24's per its OEM setup. With my current modifications I regularly see 1.27+ BAR (18.5lbs) I currently make 555wrhp and 750rwtq. I have spoken to Protomotive about the k24/18g upgrade. My question is, do they upgrade the compressor wheel from the IHI 18g turbo or do they use the housing as well? The reason i ask is I am EXTREMELY space limited within my engine bay and have no room for physically larger turbos. Thanks for your help!

 

Jason,
How is it going bro? I would think that Todd should be able to answer this question. You should email him. Either way there is probably a solution for a turbo upgrade for your car. Can you eliminate anything in the engine bay to make room?

 

They only upgrade the wheel. The exterior of the housing remains the same, but the inside is ground to accept the larger compressor wheel. The inducer is also slightly larger, but only about 10mm I believe.

Todd could answer any questions you have.

 

thanks for you input, much appreciated
hey frank, all is well, just trying to squeeze a bit more out of my current platform. The frame rails on all V12tt platform have to be widened for the stock turbos, theres just no room. Fueling becomes an issue as well. Im trying to move more air, obviously, but keep it as "oem" as possible. If youve been following VRP's 65 upgrade they add remote mount turbos and im not trying to go that route, I like to move as move as much air as possible in the current turbo housing. No one is doing this with my platform so I need to gain as much knowledge as I can before moving forward. Wide band 02 is going in next week to keep track if AFR's