I don't beleive HPF were able to tune the VX V6 that's why they just ramped the fuel pressure, I bet it's still running the standard tune. All the MACE stuff does increase power, only a couple/few kw each not alot for the money but that's because you are starting with an engine that doesn't have alot to gain in the first place rather than the products, if you wanted to gain heaps for cheap you wouldn't be running a na v6. On a budget the most effective of the mods would be a tune, which is worthwhile on a series 1 VT (not so much to gain on a series 2 as the factory allready bumped the timing quite alot) cold intake and insulators, the insulators and CAI don't show up much on the dyno but on the road that's allways a good thing. After those things you start to reach the point of...... is it worth the price and when you start eating into the engine/car upgrade the answer really is no (but you don't have to be senisble if you don't want to
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And that’s the problem you can’t get away with running a standard tune with and a ported MAF with just a rising rate reg, otherwise it still won’t perform well
I can’t talk about other manufactures on the market, however our products definitely show results on the dyno consistently (if there are no underlying problems with the car off the bat) and are installed as per our recommendations, with the exception of cold air intakes which really work best under real work driving conditions. Shown below is a before and after bolt on of our manifold insulator and plenum spacer, no tuning! There will definitely be more with tuning given that they had to trim fuel requirements of cylinders to take into account less then desirable air distribution of the factory ecotec manifold, as indicated by the fouled ignition plugs after the run.
Yes it’s not your run of the mill ecotec 6 but the gains found on this wild engine are similar to that of your mild NA ecotec, infact more so with the factory tune
Given the price of things like the spacer and the gain they represent I think one would be hard pressed to find anything else on the market that represents such gains per $$$ with the exception of some rockers on the market.
Best piece of advice people is to talk to various manufactures and about what suits your requirements for your V6 and budget as I don’t see how people can’t get at least a 25% increase in horsepower for less than 1k if they shop around. Beyond that though as you've mentioned it can start to get expensive, however this is going to change very soon :yeah:
I would've thought the bigger throttle body would be a decent mod as well, provided you've done a CAI... Does anyone know how big the standard throttle body is in mm though, and the size of the standard airflow meter? I'm guessing there's no point in doing one without the other cos the idea is to get rid of 'bottleneck' in airflow?
If it's not a huge increase in size then yeah it wouldn't make much difference, and wouldn't be worth the $$$. The standard setup doesn't seem really incredibly restrictive anyway, apart from the actual intake/filter obviously.
The size of the standard TB is 64mm, though figure is misleading and is less because there are "humps" present in the throttle body that reduce flow area. The MAF is 68mm in diameter however misleading as it has quite a large vane, plus the mesh which reduces it down. You can don one without the other as every bit helps which is more important on an NA can given the fact that it only has atmospheric pressure to work with.
