2012 si feeling sluggish

[Keens]

Hey guys.

I don't post much but lurk pretty regularly. I have a 2012 si coup in dyno blue, purchased in January of this year. Recently I have noticed it has started to feel slower, doesn't pull quite as hard, etc. I especially noticed tonight when pulling onto the road to my house. Normally, in first gear from a roll I can accelerate hard enough to get some tire chirping and then chirp second when I get into higher RPMs. Tonight, it didn't want to at all, didn't even chirp second at 7k rpm. I am wondering what could be the problem.. Maybe my clutch wearing out? It has gotten cooler and is about 65 degrees here as opposed to the average 90+ with the southern high humidity. I don't drive the car super hard, and I don't feel like I am too hard on the transmission.

Any ideas what it could be that's holding the car back?

 

[Nix]

Any change in the gas you got or the station you used? Say 91 instead of 93 and from a cheaper station? Has the problem been really recent or started before the latest tank?

 

[Redrocket1]

Reset your ecu for the drastic climate change.

 

[twister8008]

It should pull harder with the cooler air.

 

[webby]

Have you done any mods?

 

[Dennis Rockholt]

I would wonder about mods, if you have an exhaust leaking etc it can def cause it. due to loss of airflow and pressure

 

[stilletto]

Backpressure's a myth. Reset the ECU.

 

[Dennis Rockholt]

Idk I had a leak on my dp and replaced the gasket, made a night and day difference in throttle response

 

[Keens]

No mods. How do I reset the ECU? I am running 93 octane shell v power as always, but I get it from different stations sometimes.

 

[stilletto]

Idk I had a leak on my dp and replaced the gasket, made a night and day difference in throttle response

Probably screwed with your O2 Sensor. OP, just kill your battery for a night. That'll do.

 

[Keens]

I'll report back after the reset. Thanks for the info.

 

[Nix]

To reset just disconnect the negative terminal, wait a few minutes, then put it back on. That's all it takes.

 

[Dennis Rockholt]

Or just upload your latest tune haha

 

[Keens]

I forgot to mention that I don't have flashpro. I really need to get it, based on what I read around here.

 

[Dennis Rockholt]

I forgot to mention that I don't have flashpro. I really need to get it, based on what I read around here.

That is most likely the issue then....Car has no clue what to do without it with regards to Af ratio etc

 

[squiggy]

That is most likely the issue then....Car has no clue what to do without it with regards to Af ratio etc

FlashPro shouldn't matter unless he is running a 3.5" intake or an aftermarket downpipe.

 

[Dennis Rockholt]

FlashPro shouldn't matter unless he is running a 3.5" intake or an aftermarket downpipe.

True, I thought for some reason he had a downpipe. When I just had my catback, I had no FP and it was fine....so disregard what I said haha

 

[twister8008]

Hahaha. At least you are trying to help Dennis

 

[Dennis Rockholt]

Hahaha. At least you are trying to help Dennis

A for effort! (I guess I get a participation ribbon?) lmao

 

[webby]

A for effort! (I guess I get a participation ribbon?) lmao