wat headers r u using?? i have a flat spot from 2500 to 3000 rpm to but thats is from my 4 1 headers well that is wat i was told from the tuner..
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wat headers r u using?? i have a flat spot from 2500 to 3000 rpm to but thats is from my 4 1 headers well that is wat i was told from the tuner..
Interesting :(Quote:
Originally Posted by jdmTYPE R
Regards Dyno Dave
Im running 5Zigen 4-2-1 headers...I always thought 4-2-1 are designed for mid range and 4-1 are top end..correct me if im wrong..and yea i have the flat spot around that same area also...and BTW JDMtype R...r u the one selling the red dc2 with the b20 on carsales?
different memeber of the forum i believe. dis guy has eg sedan.
As i said, A/F sometime does not make much diff...if you wanna make more power, reset, and retune...there is definately something wrong with the tuning...But i reckon this car can make more power rather than just 119kw...you should hit ard 125kw...
may be is the way they put your engine togather...hmm...
Quote:
Originally Posted by master_bo_bo
It still does not make sense that they blame the headers or the intake manifold/TB,the low RPM tuning is still to lean for my way of thinking.What injectors and fuel system are you using.Quote:
Originally Posted by master_bo_bo
Regards Dyno Dave
Using H22 injectors, Walbro Fuel pump and Adjustable Fuel Reg. Dave you're welcome to give her a tune if you still plan on comming to brisbane.
Yes I will be there for the Jamboree and will be tuning the following week I am just waiting for confirmation of the dyno costs and booking so I will let you know.Quote:
Originally Posted by barefootbonzai
Regards Dyno Dave
headers 4-1 = flat spot??? thats a first.
Funny shit there Jimmy.Quote:
Originally Posted by fatboyz39
Regards Dyno Dave
Comparing 4-2-1 extractors against 4-1 extractors, is hard. 4-1 tend to make lots more power at a specific rpm, while 4-2-1 make a gradual power increase over a wider rpm range. Depending on the lengths/diameters, either can be used for mid-range or hi-rpm power. That said, most 4-1 are aimed at hi-rpm power, while 4-2-1 are for good driveability.
I agree with Dyno Dave, something is still not right on the low lobe but I suspect it is a mechanical tuning issue rather than ECU/tuner. Sure, the tuner has not managed to get it right but I believe the ITR cams would be far from optimal in this setup.
yea i do believe tat cams most likely plays a major role in this...Maybe the duration of the ITR cam isnt long enough or i dunno...but i MIGHT take it to CNJ reset it n retune it and see what they get there...or ill get some toda B cams or BC race spec 3+ cams n camgear be4 the retune...