I'm alredy ordered Capristo, i hope its good choise
One of the best.
Please tell me, have you remap your car?
Did you just turn off the catalytic converter or increase the power?
If you increased the power, by how much? Since in my city they offer tuning solutions for 500+ horsepower, which seems to me catastrophically high for this engine.
No I haven't, but I plan to, as soon as I'm done working on my other BT project, which I'm currently breaking in but will need one final "touch", if you can call that a €2k upgrade.
My plans include either a Capristo or Armytrix TBE, depending on which I'll be able to source, as I'm going to avoid purchasing online, an Eventuri intake, again for the sound, and a mild tune that will keep boost at no more than 2.35 bar. That, plus whatever we can get out of timing advance using some really good quality 100 octane BP, is going to decide the final output. I think we'll fall somewhere around 470hp but I'm going to request that torque stays between 550 and 570nm to keep the CPC happy as I have no plans messing with that. The only downside to keeping torque low, is a kind of a linear power delivery, about as linear as it is stock. That may feel great in high powered, high revving NA cars on V10's, but when it comes to forced induction, I just love the sudden surge of power. I'm not going to have that, unfortunately, it's going to feel as linear as stock, except more powerful everywhere. I don't need more power anyway, as this is taken care of by my other project. The main reason I'm doing this is the sound, I mean, it really is, or can be, the best sounding 4 banger by a mile, but I'm like, it's going to need coding the CEL anyway, so might as well squeeze just a little more power.
Now look, 500+ hp isn't what I'd call catastrophic. According to some very knowledgable people, the engine can handle as much as 550hp, so it's perfectly capable of handling a stock turbo setup, and even hybrid turbo setups with clever tweaking. The problem with getting this much out of the stock turbo, is you need to run an insane amount of boost, at 2.6 bar, which is so far above the top righthand corner of the compressor map if you see it printed, it will look like a little dot in the middle of nowhere. Now some people may not have a problem with it, but I do. It's just not how I do things, for reasons I'm going to need a very long post to explain. In short, in order to preserve turbo efficiency throughout the year, from freezing cold winters to blazing hot summers, I try to stay under 2.35 bar. If I want more power, I'm going to look at a bigger turbo, not overspeed the stock turbo by almost half a bar. A little overspeed is fine. Again, I know a lot of people still do it, knock yourselves out, I don't.
That's so you get some idea of what to expect, in case you opt for a tune. For more insight, I suggest you take a read through the tuning thread and then talk it through with your tuner. Choose someone reputable, make sure they have bFlash software and they have experience in tuning the M139. Then decide whether to just code the CEL, get a mild tune, or go for the full fledged 500hp. Or go hybrid turbo (TTE560 specifically developed for the M139), but will require several other upgrades, including bullet proofing the transmission, CPC, a lot more work in the tune alone, etc, all increasing cost and the chance of something not working right and you needing to head back for tweaking several times, but once you get where you want, you won't look back. That last bit goes for tuning projects in general, in case you're new to tuning, otherwise I'm sure you know what I mean.
