Bedford Autodrome GT - 15/08/16 - Javelin Trackdays
Discussion
If it is my car yeah sure!
Funny thing last time I was at bedford there was a white rx-7 that also had problems with noise although that was one with a single turbo and a screamer pipe. I have a HKS HiPower exhaust on the mr2 and I tend to get around 90db on static, if the downpipe isnt leaking.
Funny thing last time I was at bedford there was a white rx-7 that also had problems with noise although that was one with a single turbo and a screamer pipe. I have a HKS HiPower exhaust on the mr2 and I tend to get around 90db on static, if the downpipe isnt leaking.
IdiotRace said:
If it is my car yeah sure!
Funny thing last time I was at bedford there was a white rx-7 that also had problems with noise although that was one with a single turbo and a screamer pipe. I have a HKS HiPower exhaust on the mr2 and I tend to get around 90db on static, if the downpipe isnt leaking.
I can see how a car with a screamer pipe would get through a static test and fail on track, but I have none of that. The engine is only around 25-30bhp up from when it left the factory, which isn't mega for petrol turbos. Maybe it needs a detune, or the exhaust repacking or something.Funny thing last time I was at bedford there was a white rx-7 that also had problems with noise although that was one with a single turbo and a screamer pipe. I have a HKS HiPower exhaust on the mr2 and I tend to get around 90db on static, if the downpipe isnt leaking.
The black Rx7 went by me a few times spitting flames and all sorts.
I saw him get a noise board coming on to the straight.
Everyone seemed to be having noise issues later on in the day. I wonder if it has something to do with less cars on track, so a lower ambient sound level and people gaining confidence and pushing on more.
I know I was!!
I saw him get a noise board coming on to the straight.
Everyone seemed to be having noise issues later on in the day. I wonder if it has something to do with less cars on track, so a lower ambient sound level and people gaining confidence and pushing on more.
I know I was!!
The lap before I got the board I hit the limiter in second, and had the back end trying to get away from me around the double apex right hander.
When I came in, the pit marshal walked over to say I was within half a decibel. I asked him if it was from the tyres or exhaust, as I know they don't want prolonged slides due to noise, and he said it was probably exhaust. I asked if maybe it could have been triggered by hitting the limiter, as it was fine all day, and he said it was most likely because I was driving around in a pack with other cars, except I wasn't, and it was when the track was mostly empty and I could stretch it out a little more, so it is probably as you say, and just getting more speed out of it, although you'd think the sound would be RPM dependent, and not speed dependent?
Never had a problem at Rockingham with the identical setup, and I'm sure that was 98dB static. Would have been nice to know whether it was a blip caused by hitting the limiter, sliding around a corner, or whether I need to spend loads of money to solve it, but I couldn't get an answer from them.
When I came in, the pit marshal walked over to say I was within half a decibel. I asked him if it was from the tyres or exhaust, as I know they don't want prolonged slides due to noise, and he said it was probably exhaust. I asked if maybe it could have been triggered by hitting the limiter, as it was fine all day, and he said it was most likely because I was driving around in a pack with other cars, except I wasn't, and it was when the track was mostly empty and I could stretch it out a little more, so it is probably as you say, and just getting more speed out of it, although you'd think the sound would be RPM dependent, and not speed dependent?
Never had a problem at Rockingham with the identical setup, and I'm sure that was 98dB static. Would have been nice to know whether it was a blip caused by hitting the limiter, sliding around a corner, or whether I need to spend loads of money to solve it, but I couldn't get an answer from them.
Thanks for the pictures!
It's strange that everyone was getting noise warnings towards the end of the day. I also saw a white Porsche get black flagged for noise just after overtaking me. Sorry if I contributed to that!
We measured 100dB static so were running a low boost map and short shifting to be on the safe side.
It's strange that everyone was getting noise warnings towards the end of the day. I also saw a white Porsche get black flagged for noise just after overtaking me. Sorry if I contributed to that!
We measured 100dB static so were running a low boost map and short shifting to be on the safe side.
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