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Gtir Motorsport club » General Discusion » Gtir related Discussion » I officially give up!

I officially give up!

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26 Re: I officially give up! on 17th June 2015, 3:41 pm

PartyPete

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the one star club
the one star club
Here it is

27 Re: I officially give up! on 17th June 2015, 11:34 pm

GTI-R US

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Management
Management
well just literally finished mapping the other car with 3071 tonight but needs mapping further tomorrow as running lean from 1.4bar so fuelling problem either dodgy pump or wiring to it

thing is it still made 397bhp at 6350 where I cut the run at 1.4bar
so with fuelling issues sorted by tomorrow night the car should make very good power and don't forget this is the smaller housing 3071r
if yours is the bigger housing pete you clearly have an issue there and from looking at the graph I would hazard a guess and say your engine timing is out and that's why peak torque and bhp figures are so far apart because if ex valves are opening and closing to early or late too early it will have a knock on affect with regard to boost tailing off at the same time as well as power curve shallowing off (all around 4250rpm)#

it could however possibly be a dodgy boost controller or wastegate actuator as its peak power is actually achieved at almost 6500rpm at 1.65bar not at 1.85 it peaks at at around 4500

im still going with engine timing though, needs rc pulled off and cam position checking


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28 Re: I officially give up! on 18th June 2015, 5:27 am

PartyPete

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the one star club
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Ok, thanks for getting Back to me, I'll have to have a further chat with you on Sunday, I spoke to gems about the ant lag, the guy reckons the ecu does control it and it doesn't use a stepper motor, but he will ring me back today to confirm this

29 Re: I officially give up! on 19th June 2015, 4:16 am

GTI-R US

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Management
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heres the dyno printout from car weve just mapped
made 425bhp at 1.7bar tailing off to 1.6bar
would have made more but injectors were at 88% duty so left it at that

Remember this is the small housing too
700cc injectors
sard fpr
charge cooler
z32 maf
and a very very sweet engine


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                                GTI-R-US.CO.UK
                                    Nissan Pulsar Gti-R Specialists
                                            'In association with'
                           Torque Of The South Motorsport
             Dyno Developments 4wd rolling road & Performance Tuning Centre
                                          'Services provided'
Wheelchair conversions, Forged engine rebuilds, Dyno power runs & Ecu mapping, Dyno diagnostics, Sonic injector cleaning, Performance upgrades,
Full Race setup's, Servicing, Mot's, Restorations, conversions, fabrication, Worlds largest stockist of quality used parts for Gtir
http://www.gti-r-us.co.uk www.force500.com

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