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I was thinking the same… the past few years have been such heavy snow years I havnt really cared about not driving. But this year has had so little weather I kinda wish I had a set of Pilot Sport All Season around. I know the PSC2 is technically rated to 14 degrees (32 for storage) but I’d feel more comfortable on the All Season or at least the 4S.
I was thinking the same… the past few years have been such heavy snow years I havnt really cared about not driving. But this year has had so little weather I kinda wish I had a set of Pilot Sport All Season around. I know the PSC2 is technically rated to 14 degrees (32 for storage) but I’d feel more comfortable on the All Season or at least the 4S.
I’ve definitely done some winters here on Cup2s. It’s not ideal, but it’s not the end of the world (especially if the car is garage kept, and you get some temp in the tires). That said, I wouldn’t be pushing it on them in this weather and probably wouldn’t do it if the tires were relatively new.
Michelin pilot sport 4s. Rears are new, fronts are a few years old. All running at prescribed 29/33 psi, and were up to operating temp by the time I got to the summit. Def slowed my roll once temps were nearing freezing and stayed off the 'slime line'. Caltrans had even gone so far as to sand the Tejon Pass. Biggest concern was inexperienced drivers and cars throwing gravel up. Drove by an a4 quattro that had just slammed into the center divide. No bueno.
That steering wheel threw me off for quite a while. I was staring at the first interior pic trying to understand why you'd post a 991, or why your 991 had such an old dash, lol
Akra install follow up. Really pleased overall. It seems to lack some of that factory howl that I only remembered after driving this car with it stock + center delete. But I suspect it will change in tone over time, as most new exhausts do. Fit and finish is silly good, as it should be for the cost. This was one of the discontinued full Evolution systems that Repasi has / had, so it was roughly half the cost of new.
I did encounter a snag, which was that this system is for a .2, and I didn’t realize there was a material difference to the .1. The issue is that the side muffler brackets are subtly different between .1 and .2. Not a huge change, but enough for them not to mount properly on my car. Not a major issue, as I actually intended to run this without the side mufflers anyway. I’d watched enough videos to know the full system with side mufflers was quieter than what I wanted.
So I omitted the side mufflers and had some removable 2 1/8” muffler “caps” welded up to seal the side muffler outlets from the rear link pipe section. That plus blocking plates for the center muffler make this effectively Akra’s “Race” version of this exhaust: https://www.akrapovic.com/en/car/product/791/Porsche/911-GT3-RS-997-FL-38/2012?brandId=15&modelId=19&yearId=61. Repasi is helping me source the proper brackets so I can run the full system if ever needed, or if I ever sell to someone else with a .1 who wants the full system.
I unplugged PSE after like 2 blocks. I hate the binary 4k on/off sound and feel, and with the valves closed on this system, it might as well be a Camry. Valves open, it’s not as loud as some combinations I’ve run, but sounds fantastic at WOT, and no drone at all. Power gains? Maybe. Probably nowhere near as significant as dropping 60 pounds. I long ago gave up on the notion that exhaust mods are for power. This guy actually dyno’d this steup properly, so I’ll assume I got the same gains. Or not. Whatever. https://rennlist.com/forums/997-gt2-...ml#post7022940
Do you know if its possible to run the Akra system with the side mufflers and do a center delete? I think that would be a cool setup.
Do you know if its possible to run the Akra system with the side mufflers and do a center delete? I think that would be a cool setup.
Yep. Definitely doable. In theory, any rear center bypass designed to work with stock sides should work here, and I’ll eventually play with that idea once I have the proper brackets for the side mufflers. That setup could have low end torque benefits as well with some additional backpressure from the sides. Honestly, after a few days with this setup, I could stand for it to be a touch louder. Not much, but it’s definitely quieter than stock with center delete.
Yep. Definitely doable. In theory, any rear center bypass designed to work with stock sides should work here, and I’ll eventually play with that idea once I have the proper brackets for the side mufflers. That setup could have low end torque benefits as well with some additional backpressure from the sides. Honestly, after a few days with this setup, I could stand for it to be a touch louder. Not much, but it’s definitely quieter than stock with center delete.
I've had a few different setups on my car. I recently drove a 997.1 RS with headers, stock side mufflers, and center delete. It sounded straight pipe amazing with valves open and very quite with valves closed. I think the Akra setup like that would be even better.
does anyhow know how/where to buy a Guards LSD kits or equivalent alternative?
much appreciated
Reach out to Brandon at No Politics Racing. I just had mine rebuilt by him and it was a great experience. Fast turn around time too! www.nopoliticsracing.com. No affiliation. I just recently re-installed the LSD so I don’t have any track experience with the rebuild yet, but will soon. On the street it’s been great.
if you can post the dyno sheets that would be awesome!
@lawrence1 apologies for the delay. I couldn’t remember which thread this was in and then got distracted with some family and then travel. The below dyno results are my car performed on the same dyno by Repasi Motorworks in CT.
Thanks for posting that. Unclear if they are both SAE numbers as one graph doesn't say. Interestingly enough, the stock dynojet dynos i've seen usually show 380whp to 390whp with close to 290-300rwtq. That's on a stock car. It looks like your car put down lower numbers by a good margin. Don't take this the wrong way, it sounds like you're happy with the results so it's all good.
yeah little blurry. Dundons site says 40 hp for resonance intake with headers and mandatory tune.
I have been flirting with the idea for a while.
Struggle to understand how a 4.0 liter produces 500 engine HP (factory), and intake w/ header will be on par with that output (on 3.8 liter car).
Thanks for posting that. Unclear if they are both SAE numbers as one graph doesn't say. Interestingly enough, the stock dynojet dynos i've seen usually show 380whp to 390whp with close to 290-300rwtq. That's on a stock car. It looks like your car put down lower numbers by a good margin. Don't take this the wrong way, it sounds like you're happy with the results so it's all good.
Dyno numbers are easily manipulated and different dyno's read differently, its more important to compare same dyno same car than different cars on different dyno's.
That said I dont believe any dyno is reading accurately if it says these cars are making 390whp stock.
My car with 25k miles using fabspeed headers and a center delete made 377hp and 286tq.
With Dundon headers, no side mufflers and their loud center muffler it made 385hp and 292tq.
01-07-2024, 08:10 PM
