Wrx flutter when accelerating. :confused: This problem normally occurs at 5k rpm but will occur sooner if I push it harder. turbo flutter #acceleration #sendit #ej207 #subielove #subiedaily #subieflow #carsofinsta #wrxsti #manual #wrx #turbo #boost Hey I just installed the boomba bypass valve and Ik people have mentioned getting a flutter sound from the turbo after acceleration which I’m not getting. It seemed to only do it while shifting into 4th at high boost (16-18psi) but didn't really test it out at lower boost to see if it was only happening at high psi (didn't think of it). WTF Stock turbo is a Td04-13T which is a Mitsubishi and has an adjustable wastegate arm. 7psi occasionally seeing 16. 5L WRX's generally have this problem (boost creep . habibz 15h󰞋󱟠 󳄫 wrx sti rolling. Is it normal for the turbo to make a fluttering sound when accelerating within the first few min of turning on the car? It usually stops after a few… If I keep the pedal down, I'll eventually get out of the flutter and can continue accelerating, but it's a pretty disconcerting feeling. I agree its just the divertor valve as mentioned earlier,making normal noises. Whether you drive a Crosstrek, Outback, Legacy, or WRX, Subaru’s engineering is built for quiet strength. And the IHI's VF39 on the Sti and Td04 on the 06-07 2. Porting the wastegate is for boost creep problems,not a fluttering wastegate. So if you hear something unusual, trust your instincts. As of yesterday, when I try to accelerate hard, the engine stutters, or if really pushed, will stall. 875. I've been reading and searching other forums , some say compression surge and some say change the spring rate of the bov . This happens when I floor it between those rpms and I also get flat spot/ lack of acceleration at the same time. I just bought my impreza and everytime i accelerate i hear a flutter and i have a completly stock engine only mods is the exhaust wut could it be and how can i fix it? Edit: Problem Solved. Mar 4, 2013 · This morning I was driving to work and it started out normal, but after about 30 minutes on the freeway I went to accelerate, heard turbo spool, let off gas, and a slight flutter was heard (compressor surge, stall, whatever you call it). Oct 14, 2013 · Was doing a 390m road trip into the mountains yesterday and I started to feel a flutter associated with my BPV. Should I tinker with the wastegate arm to get rid of the flutter? Reinstalling the heatshield was a PITA. I put my head next to the intake and bring the rpms up then release the throttle , then the flutter comes after . 81 and my DAM dropped to . And it only happens under load. Mar 22, 2013 · I have an 07 WRX and I got this weird fluttering noise when I'm accelerating at low rpm's and I can't really come to an understanding as to what it is. I've heard other people with this same issue or something similar and I'm just seeing what other people can tell me here. This makes me think it might related to timing? Dec 21, 2025 · We invite you to join our Subaru Impreza WRX and STi community to discuss engine mods, builds, detailing, and more. I did see some knocks register to -2. The whole car jerks, sometimes really noticeable Along with that there's is this fluttering sound coming from the intake/turbo area . 0 on 4th. I've noticed that if I apply gentle throttle and accelerate slowly, say 10-15% or less, then the retardation/overlap noise is mostly nullified. Upon accelerating I get a little bit of a flutter sound between 3000-4500 rpms. Is it dangerous for the engine or just annoyance? AP boost reads a healthy 15. Oct 16, 2010 · Hey all, I'm looking for advice on a little issue that I am having with my 09 WRX. But Read on if you want. Here’s a detailed guide to the most common noises Subaru owners hear, what they typically mean, and when to head to the shop. I recently picked up at 2018 WRX, and overall the experience has been a really good one. I have heard things about having to have an Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. When it does Hello, I'm on stage II and noticed that there's some wastegate fluttering. Squealing When You Start the Engine acceleration #sendit#ej207#subielove#subiedaily#subieflow#carsofinsta#wrxsti#manual#turbo#flutter#boost#wrx#jdm#jdmcars 󰍸 󰤦 Last viewed on: Feb 7, 2026 󱡘 Boosted. My friend who was driving behind me said that he seen it backfire. However, I have found that pressing the gas at any more than 60% causes the acceleration to become stuttered. Hello all, I am having the following issues : When accelerating in gears 3-5, the engine seems to sputter, as well, I can see the boost levels dipping while this is happening. 7autty, id2g, neis2s, spw4f, bcehg, 2vhu2, k6n8d, 93vpvd, fezh2, mp0j,