Just a quick question what size exhaust are you running and any restrictive boxes in the system also do you run a filter on the turbo,reason I'm asking with a few cars I've had when the air filter was fitted it restricted the air intake and made a lot less power well noticeable drop on the dyno than when running without one

 

exhaust is 3" bore all the way with a middle box and back box both quite free flowing though, i was gonna go 4" but i dont think its worth the hassle as the turbine housing is a 3" aswell.
if i get a full race 9180 kit next year thats when il go 4" downpipe at least

turbo feed filters it has twins a custom made adaptor to fit 2 into one hks mushroom filters.

 

I think a 3 inch is good for up to 700 hp maybe a tad less I maybe wrong,it might be worth when your on the dyno pulling the filters off and doing a comparison mate

 

good call il ask the mapper to try it while im there.
i just found this 3.5" system dirt cheap


http://www.ebay.co.uk/itm/Nissan-Sky...item5d31eaf891


would be a waste with my current 3" downpipe but with a 4" downpipe might be worth a shot for an efr9180 set up.

 

3 and half will flow 800 I believe so you would have a fare bit to go with your current set up unless you up the boost,I'm surprised your not trying gtx although I know the Borg Warner ones are very good but usually have very large ex housings as in size not A/R can't comment on the new ones though

 

turnovee you got me thinking mate about if the engine/exhaust can flow more.
ive got a comparison plot from abbey showing the t88 vs gt4094r.
light curve is t88 showing 1.45 bar
dull curve is gt4094r showing 1.6 bar



looking at that plot the gt4094r made big gains upto 6500 rpm, then lost out slightly after that, the only thing concerning me is that i dont end up with a curve similar to that again as the loss of response wouldnt be worth it for just 20hp up top.

 

if im changeing out its gotta be an efr 9180 on a full race proper twin scroll manifold with the correct downpipe, twin wastegates etc. i did enquire around but there still not readily available so ive decided to just use the car this year and just maximise what i have.
it is plenty fast enough as it is really but you know how it is always wanting more lol
my only concern is that i dont end up with an unresponsive motor ....

i guess i can trial run it without remap tbh as long as i dont lean out it should be ok just to make sure im happy with the response before its mapped.

 

Yes I agree you want it to be fast but responsive as well,when I hade the twins on mine it used to make 600 @ 1.3 bar and 650hp at 1.5 bar but to be fare they were maxed out at 1.5 as they were only the his ones but on the road response acceleration was brilliant I used it everyday for 15mths and never had an easy drive ,only thing that went wrong was I had to go from a twin to triple plate clutch ,if your car makes 680 plus should see you in the 10s no probs

 

Well 10s if its not a lagg monster lol

 

below 11.9 will be a good start for me lol
im on os giken triple already so clutch should be good.
the car has already broke the gearbox at pod with the original uk owner, i think thats where the os giken centre plate maybe broke as it now has a stock centre plate but still the os giken gears inside, a difficult clutch to slip but il get better with some practice.

what i will do is fit the housing then run it up the road, ive got permanant wideband in all my cars anyway so i can keep an eye on it, i guess in theory the tune should be lean boost for boost but at least il see how much response il lose before commiting to getting it remapped on the bigger housing, fingers crossed though it will be good to go.....

 

I had the os triple in my r34 gtr and I used to launch it at pod @ 7 to 7500 rpm on road tyres ran 11.1 and allways 11.3 but with a soft launch at say 3500 rpm would run 11.7 you got to be abusive with the skyline if you want a good time I'm afraid as you know there a heavy old barge

 

what terminals where you hitting mate ?

 

Late 120s mate can't remember exactly as was 5 years ago think 127 somewhere up there good 60 ft though 1.5s

 

well ive finally had the racelogic out today, all ive done since last time is sort the manifold leak so its now holding from 1.4 to 1.5 bar with boost controller set on its top level mapped setting of 1.6 bar.

still done no proper launching yet just about 4500 rpm and slipping clutch slightly, but the times have tumbled !
0 - 60 4.1 seconds, 0 - 100 8.2 seconds and 30 - 130 mph in 11.3 seconds, thats 0.8 seconds faster from just fixing a leaky exhaust manifold !
also did 1/4 mile with a rubbish launch in 12 dead at 123 mph.
30 to 130 mph graph



now with the big turbine housing on and 2 bar of boost id hope those times will massivly tumble

 

thats a massive improvement fella, amazing what a slight leak can cause.

you will be into the 11s very easily soon

 

i hope so mate, the car is capable of it im sure.
with an extra 8 psi of boost and a much less restrictive turbine im hopeing to gain at least 80 hp.
in my first r32 i managed 0 - 60 mph in 3.3 seconds with a full bore launch, if i can mimic that in the r33 with my 60 - 100 mph time now being 4.1 seconds theoretically should see 0 - 100 mph in 7.4 seconds, that time should then be in the 6 second bracket with an extra 80 hp hopefully, all speculation i know but thats what im aiming for the supra did 0 - 100 mph in 7.2 seconds my best run.

 

With 650hp, you should be well into the 11's, very low 11's really. Especially the way those things grip.

 

well ive done a 12 dead with a 4.1 0 - 60 mph time, on a full bore launch if i can do it in 3.4 seconds it will make an 11.3 all being equal, i did it in 3.3 seconds in my r32 with less power so should be doable.
im still getting used to the clutch at the moment thats why i havnt full bored it yet its gonna need launching at 7000 rpm for the proper runs, i just dont want to melt the clutch in the precess like i did in my r32 lol

 

0-60mph means nothing compared to 0-60 feet when talking 1/4 mile stuff.

Does your gtech thingy estimate 60fts ?

 

i dont have the gtech now, ive now got the racelogic performance box.
it datalogs constant so i can see everything.
with 0 - 60 mph above 4 seconds my 60 fts are always above 2 seconds, but in the 3 seconds area always below 2 seconds.
il go have a look what my 60ft was on the 12 second run.

heres speed and time



and speed and distance



my 60 ft time was about 2.7 seconds at 39 mph lol
but as said i wasnt even trying to launch it hard it was more of a 30 - 130 comparison, i am loveing the racelogic box its so much better than the gtech as it constant datalogs via gps.

 

just reading back through my thread, it seems the car is now performing well for its tune, considering both r33 runs in the graph above where for 560 hp or 650 hp and both ran a 12.4, ive now run an 11.3 with 3 shifts holding 1.4 - 1.5 bar boost with my racelogic box so over 1 second quicker than them.
with the big housing and more boost surely it should sail into the 10 second bracket easily.
gotta sweep my road now asap and im gonna try a full bore launch, il get the missus to video it aswell for a new youtube vid beings as il be on private property

 

I'm assuming most of the above times are in the wet, or some other very slippy conditions ?

 

I didn't go to the MLR 30 - 130 day on the 24th March because I thought they'd be snow on the ground, looks like ran it anyway.
Rich

 

Looking at MLR, it did not happen, it's rebooked for August. The times posted above must be from another year.

 

That's good then I just wrote the entrance fee off because I couldn't be arsed to go if the weather was crap hopefully my ticket will be good for the August date. I'll give them a ring tomorrow.
Rich

 

it cant be that bad else the subaru would have done a 7 second run i wouldnt of thought.

 

The only car in that list that ran a 7s is Steven's Subaru. Not sure if that's his own car or the Lateral Banana.

Certainly if the latter, 7s is a poor time. That combined with the other relatively slow times....they simply cannot be in dry conditions.
In the dry that car would be in the 5 range

 

that was the banana and i think it was in the dry though massive head wind, that was the problem if i remember correctly

 

about time you did some ingear times

 

how do you mean mate ? just the in gear without shifting you mean ?

 

My car does in gear faster than thru the gears for a lot of ranges. Largely traction related lol.

It will do say 80-130 faster in 4th than it would using 3rd and 4th. The gearchange etc just takes up valuable time.
that said, going 1-2-4 wouldnt be as quick as 1-2-3-4. It can be weird.

But for trying to compare tuning changes back-back, a good solid in gear pull can be more useful

 

no mate, using the performance box get ingear times at any speed in any gear/s you mentioned previously it was too cold to try the performance box im an avid fan of that and have one good to see what car with what mods does on the open road bhp confuses me, what a car does on the road interests me

 

weather is better now, well its dry mate, i dont care about the cold but it must be dry.
i have loads of data hang on .........

30 - 50 mph 0.94 seconds
60 - 80 mph 1.49 seconds
70 - 80 mph 0.77 seconds
90 - 110 mph 2.21 seconds
115 - 130 mph 2.5 seconds

thats all i can do with the data i have with eliminating the shifts and the dips as best i can.

 

looking forward to the info

 

30 - 50 mph 0.94 seconds
60 - 80 mph 1.49 seconds
70 - 80 mph 0.77 seconds
90 - 110 mph 2.21 seconds
115 - 130 mph 2.5 seconds

thats all i can do with the data i have with eliminating the shifts and the dips as best i can.

i guess they will be the best comparison figures to compare against once im on the bigger housing and with alot more boost.

 

well ive swept my private road and tried abit harder launching today.
v box results best from today have been
0 - 60 mph 3.7 seconds
0 - 100 mph 7.8 seconds
still far from perfect as there was still some bog of the line.
now to allow for rollout my gtech would start the clock at around 4 mph.
so ive added a graph from that, which shows my 0 - 60 mph as 3.3 ish which is actually my best ever time in my first r32 with the gtech.
and nothing broke all the vitals are looking well




and yes that is 55 mph in 1st gear ! massive first gear lol

i also sat my camera down and filmed it all, its finalizeing now then il edit it and stick it on here

 

thats a long 1st gear! cant you rev it higher and get 60? 0-60 in one gear

 

possibly im not on the limiter at 55 mph, il have to try it.
ive got video its takeing ages to upload....

 

still uploading? lol

 

it was a pain it was vob files, had to convert to mp4 lol
anyways heres the edited video.
i was on my own so just put the camera down and drove.