Welcome to JTD-Performance.com, the only shop specialized in tuning hardware for JTD engines Where remapping ends, JTD-Performance will continue! Take a look around in the shop and do not hesitate to contact us for questions.
We offer performance parts for a wide range of engines. Everything from the 1.3 MultiJet to the 2.4 JTD for example. We also offer tuning parts for TBi and MultiAir Engines.Wij bieden performance parts aan voor veel verschillende motortypes. Alles van de 1.3 MultiJet tot bijvoorbeeld de 2.4 JTD, daarnaast bieden wij ook dieverse tuningdelen aan voor TBi en MultiAir motoren.
We always include a manual with the products that are more difficult to install, you can choose if you want the manual on paper or if you also want it digitally on or special platform at checkout.
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JTD-Performance
Engine performance parts for JTD and TBi engines
Alfa Giulia 2.2 JTD new mods in progress...![]()
Additional Giulia Q radiator for liquid cooled charge air cooler, to increase the air density.![]()
Also we got rid of that plastic intake pipe with the "dent" in it and made a proper big bore replacement out of stainless steel. With the new intake pipe, we also deleted the throttle valve.![]()
As we also placed a lot of sensors, we can datalog the pressure and temperature differences throughout the whole intake and also in the exhaust manifold, so we can actually measure the impact of these mods.
Low oil pressure warning Giulia - Stelvio 2.2 JTD.![]()
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A major issue almost every owner has experienced or heard of.![]()
There's countless topics about it; some say it's the 0W20 oil, others blaim the oil filter, the oil pump is told to be bad and some even say the centrifugal filter (of the crankcase ventilation) causes it. ![]()
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Also the rubber oil pump seal is mentioned, but strangely enough replacing this part not always solves the issue. So what is really going on here? We have investigated the problem and made a permanent fix for it.![]()
The issue is actually twofold. First of all, the stock oil pump suction seal is a weak design, which will detoriate over time. It's often the case at older cars fitted with the 1750 TBI, 1.6 and 2.0 jtd engine that uses the same seal, creating a low oil pressure warning during cold start. However, in case of the Giulia and Stelvio the problem is much more serious. We have witnissed low oil pressure warnings at full throttle acceleration, which is very, very dangerous and has actually killed numerous 2.2 JTD engines.![]()
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The second problem here is the alignment of the seal regards to the oil suction pipe in the oil pan. We have seen bad alignments with the seal lip sitting at the outer edge of the sealing surface.![]()
This alignment cannot be seen during assembly, as the stock seal is simply compressed when the oil pan is bolted to the engine.![]()
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With our oil pump seal modification however, the part is mounted to the oil suction pipe and proper alignment is simply needed otherwise you cannot get the oil pan mounted. This is because the seal modification has to slide into the oil pump bore.![]()
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We were in contact with Nicolas, a mechanic that also has a youtube channel. He was struggling with a Giulia with the low oil pressure problem. The oil seal and even the complete oil pump were replaced but didn't help. After opening the engine sump for the 3rd time, and fitting our oil pump seal modification, the issue was finally resolved. He made a great informative video about the mounting process, so make sure to check it out:![]()
youtu.be/b-60aJFxwyg?si=Ie6fobXncVTPp3o8![]()
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The seal modification can be found here:![]()
jtd-performance.com/en/product/oil-pump-seal-modification-jtd-tbi/
Newly developed for the Giulia/Stelvio 2.2 JTD, EGR delete kits. To fully remove the EGR pipe which is obstructing airflow in the intake manifold entry and close it with a CNC aluminium blank. In order to shut the lower part we've made a stainless steel end cap with threaded bush to seat the EGR temperature sensor (which has no longer a function). Available in the webshop soon!
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De Huufkes 33K
5674 TL Nuenen
The Netherlands