Originally Posted by
specVmatt
I was considering the 8mm intake manifold spacers made my Grimmspeed whenever I get around to doing TGV Deletes and installing my APS Turbo Inlet. Is it worth the $100? I've heard people say when they run their cars hard as hell and jump out to touch their IM's and find it to be nearly cold, let alone hot like mine currently is. How is this possible? The hot engine bay temps I have now are enough to make the IM hot even without the head causing the heat. So, can someone explain to me if they have personal experience with these and whether they like it or not?
From what I've read, worth it on cars with a metal intake manifold mainly because it will reduce transfer of heat from the head to the intake manifold. Phenolic composite material has very good thermal resistance, therefore when you sandwich it between two metals, the hotter metal will transfer heat to the cooler metal at a much slower pace with a phenolic composite material in between the two. The thicker the material, the better also as the rate of heat transfer will be lower. Less heat in the intake manifold, means the air is cooler going into your combustion chamber.
Originally Posted by
specVmatt
Another question. TGV Deletes. I've heard they are good for 10-12whp on stock turbo STI's, and there is even more power available for bigger turbo guys. Can anyone relate to these power gains being true or not? I made 409whp with my 2.4in Dom 3 with the TGV's still in place. I think thats a bit high reading but whatever. If I do the TGV Deletes, does that really mean I would make at least 420whp on the same dyno? I really just want peoples' experience with their deletes as well. I know there are alot more factors but I'm sure enough of you have experience to give me the info I need to make the right decision. Thanks for the help.
I ran JDM TGV deletes for a while and the opening was MUCH larger compared to stockers. You can definately tell there is air flow restrictance going into the compustion chamber with stock ones.
Honestly I don't see you making 420whp with just doing TGV deletes, maybe more like 415, but that's just my opinion.