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Old 03-11-2009, 09:30 PM   #20 (permalink)
Deezler
Master EcoModder
 
Join Date: Apr 2008
Location: Michigan
Posts: 261

Bio Deezler (sold) - '03 Volkswagen Jetta GLS TDI
90 day: 50.78 mpg (US)

The Beast. - '03 GMC Sierra 2500HD SLT
90 day: 12.86 mpg (US)
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Thanked 36 Times in 22 Posts
Hi Tas,

I went with what I thought was Alligator tuning but turned out just to be Kerma's own work (I think). Anyway, yeah, kerma Q-loader. I first got a tune for the otherwise stock engine and then got a 2nd file once I put in the Bosio PP520 nozzles. It's really convenient, 5 mins in the garage and its remapped, for free. Kerma's tunes have been awesome, too, very smooth. Especially noteworthy since they are "clutch saver tunes" since I'm too cheap to get a new clutch already. From an ecological standpoint, I shouldn't wear out an otherwise good clutch, but the power overwhelms the stock one so quickly. (I guess I do have about 50% more power already than I did stock, though)

I do not have an EGR delete; I want to keep it for NOx control and faster warm ups. I asked Kerma to reduce the rate for me though, not sure if he did or not. Though I could block it now without a check engine light.

And NO, I don't have a vag-com or vdcs, it's a major problem. I do have a scan gauge to clear codes but not being able to adjust the engine operation is frustrating. For instance, my tune with nozzles was great originally but now that they've worn in I get a light haze of smoke at WOT. I don't like projecting the image of smokey diesels... but when I get back on pure biodiesel in May it should subside a bit. But I'll probably get it adjusted before then, when I have my local TDI guru do my timing belt, clutch and... 5th gear swap! sometime this spring.

The muffler delete is mandatory, sounds way cooler (not louder) and flows freely.

The OMI is a pipe from a TDI PD150 from across the pond. There are occasionally very good deals on tdiclub classifieds for them. I'll document the install for the forum here, but I'm hopeful for a good flow increase. Previous OMI purchasers have all reported crisper power and lower smoke.

Back to the original topic, my zerostart coolant heater, running somewhere around 170 watts, still does a nice job. Sure the coolant only gets up to 85 degrees, but that is mighty pleasant versus a 35 or 40 degree startup. The thermostat is steady at 206 degrees, and the engine seems to like it just fine. Unfortunately, scan gauge readings are actually down a mpg or two (though they are way out of calibration ever since the second ECU tuning, reading 58 mpg for a real world 49). But it has also been very windy the last couple days, cross wind style. doh! It will take more time to know.
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