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Valero 93 oct with 0.8 - 1gal of E85

yea it's so unreal. Even in over 100 F weather it doesn't change. 🤷‍♂️ This may sound stupid but sometimes I push it hard on purpose to see if it goes up but nothing lol. Just gonna enjoy it

UPDATE: It’s been a little while since I updated this but here it is. Vehicle: 2020 Civic Si Sedan Total tuned time: 7 Months Tuned miles driven: 6,500 Tuning device(s) used: K-Tuner v1.2 Tunes used: TSP Stage 1+, TSP Stage 1, Ktuner 23psi Fuel used: 93 oct (+ 1 gallon of E85), Valero...

UPDATE: So I got a response from TSP with an explanation from Drob. This is what he said: "It's under-reporting airflow like crazy (as shown in major positive trim), which skews the boost control logic. Nothing in the tune file causes that. He either has a mechanical problem or the wrong MAF...

Not sure if you’re talking about me but I’m not getting distressed over nothing lol. And 350whp is not a unrealistic expectation for Si. Eman built a 360whp Si, OSOSIK, PRL and MAP built more. Like I said, it’s all possible just takes time, experience and money. And yes it’s not worth blowing...

The amount of times I hear that you should look for a different platform if you want more power. There’s always gonna be cars out there that makes more power than the car you want. That’s just how it is. Some of us just want to settle on one car and build it for fun. Did my research before...

Oh yeah that makes sense. Forgot all about the fuel system maxing out.

I’ve always wanted to ask this but didn’t know where and since I saw it here from @Two Step Performance themselve might as well ask here. If Drob makes your canned tunes, how come you guys claim ~350whp with RV6 and W2 turbo but on his instagram every Si that he tunes and dyno with the same...

Thanks for the response. I didn't know that. I thought the ECU adds or take away fuel to meet the stoichiometry AFR and since ethanol content requires more fuel to meet the proper ratio I thought that's why my fuel trims were off the roof. And unfortunately I'm not able to compare the maf...

Awesome will do. Thanks.

Vehicle: 2020 Civic Si Sedan Total tuned time: 5 Months Tuned miles driven: 4,600. Tuning device(s) used: K-Tuner v1.2 Tunes used: TSP Stage 1, Ktuner 23psi Fuel used: 93 oct, Valero Additional related mods: PRL Cobra CAI Street MAF, PLM DP+FP, 3 in custom Yonaka catback exhaust, Oil catch...

UPDATE: I have flashed back to Ktuner 23psi and did datalog for TSP as suggested with WOT and they don’t see anything wrong in the datalog. No over boosting as it did in TSP stage 1 tune. I’m hitting boost targets or slightly lower because of weather conditions. They suggested that I remain on...

yeah TSP is great. I’ve been emailing back and forth with Corey and he’s been a great help.

yeah sounds like same issue I’m having. Please let me know what he thinks the over boosting issue is.

yeah np will add my si asap. UPDATE: I added my Si to your tuning thread

yeah that's true as I read but I just thought 3 psi over is a bit much. Does ethanol also add to boost spikes? I'll be lowering my ethanol content (maybe straight 93) to see if that was a factor.

yes I have high flow catted DP + FP with 3 inch catback exhaust as well. How much max boost did you see above your TC target?

thank you. And also I believe the PRL RACE maf for the Si's say SI-R on it (maybe wrong). The only think I can think of about the fuel trims is maybe the ECU is compensating for the amount of ethanol since it needs more fuel to burn the ethanol. I may be wrong. But what about the 27.9 PSI...

So I just bought TSP stage 1 tune for my 2020 Si (Canadian spec - if that should help) and flashed it. After I flashed it, I went for a drive and started data logging. I started to notice on my gauge that the car was boosting way too much without going WOT. I noticed 27.9 psi (target is 23.3...

I have aFe Takeda Stage2 intake. And yeah I'm currently still calculating the MAF scale for the next tune.