Curious if anyone has any info on the stock turbo limitations or maximums of stage 2. I’m about to dyno on 101 octane, modalworks intakes, and catless 3.5in downpipes, I previously made 540whp/627tq on 91oct without intakes. I’m curious if others have dynod with similar setups on similar octane. Any guesses on what I should expect?

 

I dont think anyone can give you a hard, real world turbo limit but ultimately its the compressor efficiency map that will matter. Not seen one for the stock turbos.

I'd bet intakes net you 15+ more whp in top end, guessing.

 

*****I'm having my car tested at the Dyno tomorrow and my car still has the stock turbos, but a new tune, and BMS Intake system. I had the car tested a couple of weeks back bone stock, with the BMS intakes, and no tune. Checking to see how much the tune was worth HP and TQ wise as well as to assess fuel trims, EGT, AFR, etc.. before I put the new turbos on, and have a tune made up to optimize it all.

 

After stage 2 turbos are limited 21 psi would be the sweet spot

 

I was seeing 18psi on 91 oct, I’m hoping for 580+ whp with intakes and 101 oct but maybe that’s too optimistic. Dyno is Tuesday so I’ll report back 🤷‍♂️

 

no downpipes? Let me know how it goes! I can’t seem to find anyone pushing stock turbo limits with a 101oct tune like I am 🤷‍♂️ I love everything about the way the car is right now. I’m afraid of more traction issues and shifting the power band

 

Looking forward to your results. That number seems feasible with the addition of 101 octane + intakes on a solid tune. Either way peak power will be around 5k-5.5k on stock turbos and you will see a dropoff topend since they run out of breathe. No real way around it unless you upgrade them.

 

*****Other than the BMS intake and the blow off valve things my car is totally stock. My tuner is doing his thing now. I only run 93 octane, and don't have meth, or smoke meth, etc.. On 4/8/22 bone stock my car with the intakes did a bit more than what is advertised as within spec, mebbe 15 HP more overall. I think the post is above somewhere on this thread.,, 93 octane gas, not a total banzai run but we got good EGT, AFR data and verified health of the motor, etc.. before we start adding the bigger mods, and re-testing again.

 

Morendi mentioned the HPFP is a restriction

 

Upgrading my HPFP + LPFP pumps in the next 2 weeks and having PTG refresh my tune for E85

Hoping for 600+ hp at the wheels

 

im going Hybrids over this winter... stock HPFP on RO98 (euro) should be good for around 620 RWHP

 

Lots of cars with blown motors that don't post about it. I would not run over 22 psi and the c63 engine has way to much compression vs the e63 gt cars etc.