Mark@Abbey m/s

Yes a few bhp down top end , but the HFC,s add a big gain torque through the rev range , and the mid range torque is more usable than a few bhp at the top end I feel. Mark

The strange line at the bottom of the run was as you say the way the car loads up on the dyno. The cars do like a retune especially after breathing parts have been bolted on. The stock map is pretty bad in my opinon.

Attached is a dyno plot of a totally stock AUTO 370Z agaisnt a AUTO 370Z fitted with Berks HFC's/Miltek Y pipe/HKS panel filters and a HKS super sound master exhaust system and a Uprev Remap; a 25bhp gain at the rear hubs and a 25lb/ft gain in torque across the rev range. We also remap the throttle maps and tweak the max torque allowance map to make the cars shift gear faster and be a little more agressive with the throttle response. Mark

These guys are talking about DE motors those Wasso.

Now we can do the super deal on the HFC,s includig fitting and a Uprev , I imagine the Stock Y pipe,Berks HFC,s would be a better gain per pound spent. But the De-cat,XYZ Y pipe and race cat and Uprev would give more BHP/Torque but be more expensive. Mark

Does sound like a fuel damper but these are normally only give a problem when hot I thought.

Timing chain tensioner slow when the oil is cold in the morning; If you start the car when warm I presume it is all okay? Mark

Stock 350Z run 2 speed fans they have 4 wires that go to the fan; The Stock ECU control these fans not a thermostatic switch. Are you trying to change the fans as the stock fans have failed?

Sounds more like heat soak issues to me to be honest, this is an issue with CAI on the 350zeds used in built up area's , you never get enough air flow over the filters to cool the air intake temperature back down. But the HR motor always run very rich stock , dont understand why Nissan tuned them this way to be honest, maybe to keep the Cats warm and working. Stock airboxes work fine in my eyes .

You can tweak the fuel map to make the car run spot on re AFR/timing , these car run closed loop so they normally run pretty spot on re AFR, but the fuel maps do need tweaking to make sure the car sees the AFR spot on; If you have a car other than the UK 276bhp with cruise control we can make a map with a slower throttle response so making the car a little more economical but you cant really map these car much leaner than what Nissan tuned them from , but after tuning a lot of people say they get better fuel economy after a remap. What about a unleaded map cheaper fuel? Mark

Okay thanks. sorry to crap your thread Dicky

Cheers Wasso , I just hate using photo bucket etc etc. LOL

Hi, I will post a totally stock car versus Uprev remap ASAP , we may have one in the original Uprev thread in our Abbey part of this forum. Attached are th edyno plots but remember it isnt just full throttle that is greatly improved, the lower 3 gears the throttle reponse is greatly increased, fuel economy improved. As your up North I am sure RS tuning will look after you. Mark

So the tyre pressure will still climb then? the only trouble if you do get to the point where the tyre pressures are constant , the 1st few laps out the pressures will be low and the car will not feel right so you need to be careful.

So you go out on your 1st track session with say 34 psi frt 36psi Rr, then do your 1st session you come back in the pressures have gone up to say 38psi frt 42psi rear , you lower the pressures to 36psi frt and 38psi rear this is your warm tyre pressure , then you do another session do the tyres not gain anymore pressure? if they do do you leave them as is or do you lower the pressure to your warm temperature pressure?

Send me a email to mark(@)abbeymotorsport.co.uk.

This kit is for a DE (276bhp) motor it wont fit a REV UP like your Wasso. I know Cookbot modified his bracket but I am afraid we wont due to strenght issues. It has only a couple of brackets missing from the intercooler/supercharger oil cooler set up, very easy to make; I was going to fit it to my Red 350Z car but I think I will soon be moving this car on to make way for either a 350Z convertible for cruisng or a 370Z for development usage.

http://www.ebay.co.uk/itm/HKS-350z-Rotr ... 20be06a6d5 Get yourself a bargain guys; http://myworld.ebay.co.uk/nismobear1/?_ ... 4340.l2559

Neil, I am not saying that I know everything far from it but I am sure we can have a reasonable discussion on here to help other people understand trackday tyres pressures. I agree a heavier car will need higher tyre pressures , but when you run on the track and the tyres start to heat up due to friction the pressures climb fairly quickly, we then lower the pressures to keep the tyre pressures around the idea pressure. I agree a higher tyre pressure will make the tyre be stiffer on the sidewalls but a higher tyre pressure can cause the tyre to ballon and over heat so losing grip, Neil have you ever used a tyre pyrometer to check temps across a tyre after coming off of the track?

I disagree, blow your tyres up to a high pressure they will ballon in the middle of the tread due to the flexibility of the tread carcass. That's why when your tyres pressure's climb high the call will over heat the centre of the tyre more. A RWD car will work the rear tyres harder than the front tyres, that's why I say remove more pressure from the rears, and to be 100% correct you may need to remove a little more from the left front as this will work harder than the right front. I have worked in Motorsport for over 15 years so i do know a little about car set up.

you need to run the cold pressures lower as the tyre heat up the pressure climbs and the tyres ballon in the middle. Running higher pressures for sidewall strength doesnt work as it will cause the tyre to ballon; if your only doing 3 laps runs knock around 2 psi from the rear around 1 psi from the front, any more laps than that may be 3/4 psi removed from cold tyre pressure's

You have a PM; Mark

yes in stock and ready to go as they say!!!! Ring Scott on 0188 732331 ext 2 Mark

286bhp or do you mean 278bhp? I have dyno plots with Milteks system's but no HFC's with stock systems yet.

Quote as requested; We can also supply Milltek full exhaust and Milltek Y pipes at good price from stock and Motordyne Y pipes as well.