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Thread: Dissapointing dyno

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Posts: 1-10 of 39
2008-09-22 18:21:04
#1
Dissapointing dyno
Car was fiddled and dyno'd today....

The cam gears were at 0 0, this is where I felt, plus read the reason the car wasn't as fast as it 'should' be...He dyno'd the car first..which gave 136whp, then set the gears to +2.5 -2.5 as I've read around that is the best, then back on the rollers which put down a massive 120whp...with any more advance there were clearance issues.

2 things though, He said the mapping is all over the place( the gasket did give up shortly after which could of affected it whilst it was being mapped) and for some reason the graph cuts off at 6k but it's still climbing...But I don't know if that's just the graph or what. The car is still at a 7krpm limit.

Mods are..
BC stage 3's
JWT cam gears
BC valves, springs+retainers
SR16 pistons
SSA header, 2.25" cat back
CAI

Engine is a UKDM lowport converted to non-RR




Any help/idea's/info much appreciated
2008-09-22 19:16:40
#2
You need to rev DE with BC stg3 cams to 8-8.5k rpm. Max power around 7500 i guess.. maybe bigger exhaust help too.

What ECU?
2008-09-22 19:28:33
#3
Its been said that best power on a DE is cams set to 0,0.

What are you using to tune it?
2008-09-22 19:34:07
#4
The standard ECU has been mapped...he installs a different chip on the ecu and it becomes programmable.
2008-09-22 20:00:46
#5
x2 on the exhaust 2.25 is pretty close to stock, go with a 2.5. 165whp doesnt seem to bad IMO
2008-09-22 20:05:59
#6
Originally Posted by NissanGuy
x2 on the exhaust 2.25 is pretty close to stock, go with a 2.5. 165whp doesnt seem to bad IMO


That's fly

One thing, if the chain was say a tooth out, would the car still run smooth...but be down on power like this?
2008-09-22 20:12:24
#7
Robchaos made best power at +3 -3 with same setup.

Its lowport DE, any pics? What ECU? isnt Calum realtime better? Maybe AFR closer to 13:1.. really remove rev limiter...
2008-09-22 20:15:46
#8
your making around 140whp which isnt too bad, like others said exhaust needs to go, too small you will make more power with those gears adjusted,larger exhaust
2008-09-22 21:38:23
#9
definatly that exhaust is holding u back go bigger and u should at least have more that whats there now
2008-09-22 22:24:55
#10
Originally Posted by GTi
The standard ECU has been mapped...he installs a different chip on the ecu and it becomes programmable.


Just to ask a question how did you convert your RR to a non RR motor. Please give me step by step.

I know how to do this but I am just asking.
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