cheddar bob

That's the case with most small highly tuned 4 cylinder N/A engines, it's more progressive, with VTEC the only reason you notice the changeover apart from the noise is because of the drop off in power just before you reach it. Also because of this kind of power delivery they just don't feel as fast as similar powered turbo'd cars.

BTW I've found a clip of a S2k with a Spoon N1

sounds evil @ 7.5-9k revs

I'm planning on eventually getting my teg remapped (unichip) with the VTEC point lowered to improve the midrange

Dark Blue Mark

Bob, thats what I used to think but ive looked at numbers of dyno plots and the only time ive seen drop off before VTEC was on one MY00 S2000. My dyno plot doesnt show a drop before VTEC and the fuelling doesnt lean just before either.



On the ITR, there's a chap called Tara on the Revoutions Forum. I went out in his which had headers, decat, zorst, ITG induction kit, TB and a Unichip by Millway and it was fookin quick! had some handling tweals too and was significantly better than a scoob in the dry. Dont go too low on the VTEC though



MB

LG John

I don't see the point of lowering vtec introduction on an S2000. Its very easy to keep it in vtec so the only point in doing it is if you are absolutely lazy and don't want to drop gears - if thats the case by a turbo car....durrrrr!

I'd love to thicken up the power when in vtec. The peak of 240bhp is fine but it needs to make closer to that for longer. This incidently is why Neil's clio cup is fractionally faster than my S2000. When he dyno'd it he peaked at something like 192bhp* but made something stupid like 185bhp for close on 2000rpm just prior to the peak. On the road that is what makes the difference.

* If you look at the p/w/r based on the peaks then the S2000 (186 vs 190 per ton) is more beefy but on the road its not.

Dark Blue Mark

Im exploring Nitrous and blowers at the mo Kenny I think the blower may be overkill but would be mentally quick! I find it quick most of the time, but Id like to have a bunch of power on tap when required (ie some chav in an old WRX on a dual carriageway ) so I think NOS might be a laugh if set up right!

Insurance is the killer either way...

MB

LG John

It does seem to be the case that you shut up and put up or alternatively spunk several grand on something that will make it markedly quicker. I'd be surprised if there was many /any full weight S2000's running 0-100 in 12-13s for example. It's either the standard 14.5s or <10 Pitty really as I feel all the S needs is the grunt to lay down 100mph from rest in 12-13s which would make it almost as fast as the M3, etc.

Dark Blue Mark

Nitrous is the way forward if you only want it in emergencies!

MB

LG John

But it does cause markedly increased wear on the engine does it not? And also it isn't permanent which would be quite bugging? What sort of gain would you be looking for from nitrous?

Ben WRX Bug-Eye

Depends on the nozzle size. +25/50/75 or 100bhp are all common. Worst that can happen is engine damage - such as a piston through the bonnet. Wear isn't really an issue with it as it's on such a tiny fraction of the time. Other things to consider are how you want it to be activated and at what percentage in which gears. With a quality setup it is very unlikely to damage the engine provided it is in good order to begin with.

ADP

Hi Leggy Blonde

Just sold my S! oh no! Now in a golf tdi oh joy

LG John

Doesn't stand for that any more - stands for Lazy B@stard

Dark Blue Mark

Ben's right, if you get a good setup it can be reliable and effective. I like the idea of it, as 90% of the time the car is quick enough to keep up with most stuff - but it would be great if you needed some extra beef if you got caught in a straight line battle You can trigger it on WOT or via on off switch and also decide the duration of the shot etc... Personally I'd like to have some aircraft style switch with danger written on it

As a rule, 100bhp show will really give you 50bhp due to the nature of the reaction when combusting.

Honda's and NOS seem to be a popular combination. prob the strong engine, combined with the need to have it

Used to be some great info on PE's site but looks like its gone: http://www.powerengineering.co.uk/ac...rk.htm#Nitrous

MB

Ben WRX Bug-Eye

Got to be "Go Baby Go" on the NOS button mate.

Dark Blue Mark

Good idea...

MB