2025 Si question

[Mick1965]

How much more hp is possible with a PRL cold air intake, Remark exhaust and a Hondata tune?
Got my 25 Si three months ago got 1800 miles on her so far. God I love this car.

Sponsored

 

[Shankmeyster]

I have a PRL HVI with cold air, turbo inlet, intercooler, charge pipes, Remark exhaust, and a custom tune on KTuner on 91, and I am pushing 223 whp and 262 ft/lb. It spins the tires all the way through 2nd with VSA on.

 

[Two Step Performance]

FYI Hondata (nor KTuner) supports the 25 Si yet. I spoke to Hondata at PRI last week and they didn't sound like they were anywhere close on it.

 

[nawfoo]

This is the wrong platform for those mods. Sure, you'll feel a slight difference but these cars are not meant to be tuned like that. But my estimate would be 5 hp intake, 10 hp exhaust, 20 hp flash. Flashing is mostly for BMW, Subaru........

How much more hp would a flash squeeze out of the 1.5T? When I had my M240i with a flash it was almost 100 hp.

 

[Two Step Performance]

This is the wrong platform for those mods. Sure, you'll feel a slight difference but these cars are not meant to be tuned like that. But my estimate would be 5 hp intake, 10 hp exhaust, 20 hp flash. Flashing is mostly for BMW, Subaru........

How much more hp would a flash squeeze out of the 1.5T? When I had my M240i with a flash it was almost 100 hp.

Our Stage One+ tune for the 11th gen Si (22-24 at this time) offers peak power gains of 38 whp and 97 ft-lbs. Not bad for an investment of $449 (free tune with the purchase of a KTuner). Though I'll admit you may want to consider one of our more conservative tunes like our normal Stage 1 tune if you want to keep the stock clutch happy.

 

[Mick1965]

FYI Hondata (nor KTuner) supports the 25 Si yet. I spoke to Hondata at PRI last week and they didn't sound like they were anywhere close on it.

Province.com shows a Hondata pro for a ‘25 Si for $790. What gives?

 

[Two Step Performance]

Province.com shows a Hondata pro for a ‘25 Si for $790. What gives?

Carelessness I would guess. No software support at this time.

 

[Stanleywinthrop]

FYI Hondata (nor KTuner) supports the 25 Si yet. I spoke to Hondata at PRI last week and they didn't sound like they were anywhere close on it.

That's interesting. Isn't it the exact same engine as the 22-24?

 

[Two Step Performance]

That's interesting. Isn't it the exact same engine as the 22-24?

Engine, yes. Electronics, no.

 

[Mick1965]

That's interesting. Isn't it the exact same engine as the 22-24?

That's interesting. Isn't it the exact same engine as the 22-24?

Typo on website: procivic.com
I thought it was the same engine as 2024.
Maybe they tweaked the system or something, idk
Do you have a 25Si? What do you think of the power and acceleration?
I think it’s just fine considering the car is under 3000lbs. But 40 more hp it would be incredible imo

 

[deantiago]

Anyone put a blow off valve upgrade 1.5l? Maybe the TurboXS Hybrid Blow Off Valve I have a 2025 haven’t seen any videos for this year? Is it the same as years before?

 

[nawfoo]

Anyone put a blow off valve upgrade 1.5l? Maybe the TurboXS Hybrid Blow Off Valve I have a 2025 haven’t seen any videos for this year? Is it the same as years before?

Thats a unnecessary rice mod. A nice open intake will give you a functional whoosh. I had one on me 2004 WRX and it ran like shit.

 

[Shankmeyster]

Anyone put a blow off valve upgrade 1.5l? Maybe the TurboXS Hybrid Blow Off Valve I have a 2025 haven’t seen any videos for this year? Is it the same as years before?

That's not an upgrade since these cars use a recirc/bypass valve and BOV throw off the ECU and cause rich conditions.

Sponsored