Mark@Abbey m/s

The hissing is all to do with cam control on over run we normally find , Scotty is your noise at 3000rpm on the over run or on full throttle? On the 350Z we tweak the cam map ont he over run to help with popping on the over run , we still cant get into the cam control on the 370Z so we are a little stuck at the moment on the 370Z's. But I think cam control remapping wont be far away with the Uprev software. Mark

When you carry out 4 wheel alignment when adjust the rear camber/track you have to juggle both eccentrics to get both the camber/toe correct. You can't just leave the camber link in the same position and expect the angles to be correct Get the car on a laser 4 wheel alignment machine.

its back to the old MOT rules are different to construction and use motoring laws. Mark

We done this a few times on 350 Zed's with good results.

I thought this was brought in as law a long time ago.

Sam, I think after 1994 if a car had a cat fitted as standard I think it is illegal to run the car without. I would need to have a look around to be 100% sure thou , spot checks are getting more common around built up area's I have heard.

P1283 NISSAN - Air Fuel Ratio (A/F) Sensor 1 Lean Shift Monitoring Bank 2 sounds like the front lambda on bank 2 has had a fault, you maybe luckily and reset it and it wont come back on. Another good idea is to swap the front lambda'a over from bank 1 to bank 2 and vice versa. This sometimes sorts the problem out. I doubt the plenum spacer/air filter will be the cause. Mark

The cats have a matrix inside that converts the exhaust gas into a safer gas , a stock cat is around a density of 500 dpi where as a HFC(high flow cat) is nornally around 250/200dpi so it is less restricting,so the exhaust gas flows easier so less restricting , but still allows the car to pass the MOT emission test. Being less restricting fitting HFC's makes the car's sound a lot better and then fitting a nice exhaust system and a remap will keep the car legal and let the car sound and go like it should. hope that helps.

It wont be a Stillen exhaust on the deal it will be a HKS , are you still interested? I also have a big berks delivery on it's way to the UK so we can also add a set of HFC,s into the deal if your interested in the HKS super sound master exhaust system. Mark

We can do you an awesome deal on an exhaust and include a Uprev remap if so needed. Please dont count us out thou as we arent the cheapest labour rate but far cheaper than a main dealer but we know the 350/370 Zeds really well and have the latest diagnostic equipment in house.

If it is in the sandwich plate it can be in the oil flow to the oil cooler or oil flow from the cooler, so you need to make sure they are in the same place before comparing.

Temp sensor's need oil flow over them to read correctly. But reading in the sump is a pretty good idea. But I think you better readign the oil temp before it goes back into the motor after running htrough the oil cooler.

Ended up a good tune after the initial dyno hassles; 1st run I noticed the car was running lean and there was slight noticable detonation at hgh RPM due to the fitment of the Berks HFC's So a few minutes building a base map and a couple of runs we was getting nearer to the require AFR's and the torque and BHP started to come back. A few pulls tweaking the cam control map to smooth the torque out. I also spent some time tuning cam control at part throttle to help mid range part throttle torque. Uploaded the normal Uprev throttle opening maps tweaked the speed limit and RPM limits.

We can also supply aftermarket cooling fans for a cost of £78-00 inc vat + delivery. Just waiting for stock to srrive. Mark

Just taken delivery of some Anti Roll bar drop links for all the 350Z cars. We can pass on the super deal we are getting these links for. Front or rear pair of links including VAT are £70-00 inc vat. Plenty in stock.

Remove the 2nd set of cats using an after market front pipe. Re flash stock ECU using either Ecutek or Uprev, to raise boost to 1.1/1.2 bar and then leave alone they are quick enough at 550ish BHP and will be reliable. We dont just tune old GTRs and 350/370's!!!!

Tim, You car is spot on re AFR, remember Anlid is runnign 95 octane fuel so it needs running richer than a car tuned on 98 octane fuel. Also the dyno plot is only for infomation how many times do you drive full throttle from 1500 rpm to 6500rpm , never I should think. must of the time you shift at 6500rpm the revs dropp to around 4500/5000rpm then you back on full throttle. I have never had the Uprev datalogs from you Tim so I cant speak on this lean spot you have spoken about? Mark

We are in as well.

Oil starvation has been put around re the engine failures, but the one that failed on my dyno had no issues of low oil pressure while on the dyno , oil and filter had been changed prior to the dyno work. After the failure we pulled the plugs out and looked down all the bores with our endescope. No. 3 pistons has gone only the gudgeon pin left connected to the con rod , with out any more stripping which we do if we do any motor change the con-rod is still connected to the crank I cant tell if the big end has seized but I doubt otherwise I am sure the rod would off been broken and cause major engine block damaged. So why did the piston break up , to many rev's , detonation. We wont know until we get the motor stripped we can say no more , but the amount of damage in that cylinder I doubt we will have any piston to inspect, but i am sure we can inspect the other 5 pistons for detonation damage inspect the bearing for hammering due to detonation. Mark

They are the same control's just swapped over, I would think the wiring may well need extending but I am would need to check the 2 cars out, will endeavour to check this out next week. Mark

Sweet looking car.

You can fit a after market ECU if you want but for what most people want a stock remapped ECU works fine. You keep the cruise control,fly by wire,self diagnostic system. In my eyes the stock ECU is an awesome piece of kit especially as we can tune it.

not really , you cant just fit wide bands to a JDM car thou. Really only a issue when tuning as we cant datalog the AFR via the ECU on early JDM cars.

Nope you need to read ECU number from ECU code via OBD port

Theoretically, yes. More pre-detonation will cause increased damage to the pistons, the rings and the bores, which can lead to oil passing the seals and getting burnt off in the combustion chamber, which obviously then causes massive oil consumption. From what we have seen the oil usage is due to polished bores and oil control rings wearing out, but oil in the breather system will lower the octane rating of the fuel.