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?

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.



And totally off-topic, who at the Meet on April 18th told me about crinkle red touch up paint I can get for my shitty looking Perrin FMIC piping? I could use some of that stuff. Thanks.

 

spacers: If you are taking off the intake manifold, you might as well do them. they can't hurt.

tgv deletes: not sure about the actual power figure, but if youve seen them in person they are quite restrictive. A stock STI really doesn't need 100% of the air the intake manifold can send through, so its not really an issue. However, the more power you make, the more it turns them into a limiting factor. I had mine removed because one of them failed. It's a good idea to take them out before they do some damage, so I would personally recommend them.

 

here's some info. looks like it would benefit when done with other mods.
Intake Manifolds...how to fight heat and quicken spool. - NASIOC

 

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.



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.

 

Thanks Albie and Shocker, yeah I don't think I would hit anywhere near 420whp either. But going by info I've read, I would be well above 420 lol. I just want to make sure it will be worth it. Seems like it would be.

 

The people claiming that they make 10-12whp by just doing TGV deletes are just trying to fool themselves into believing that their $200 part was worth it in their minds.

The only way I could ever see TGV deletes ALONE giving 10-12whp is if our crappy flowing heads had a significant port and polish done to them because the heads are holding our motors back more than the TGVs.

 

The only reason I would do the TGV's is if I wanted to run a 3" inlet on a stock location turbo. The sensor has to be removed in order for the larger inlet to fit. Once removed, might as well do the phenolic spacers.

 

I say 420whp can be done with the spacers, tgvs, and inlet. Multiple reasons:
1. Hell its 11hp difference... you could change nothing but the wind could be blowing east instead of west the day you re-dyno and you get that number
2. As far as actual gains... you are putting the turbo/ic into a more efficient range that you can squeeze more boost and/or timing out of it. If you have more room on your fuel side you can def take advantage of the extra air aswell.


However since it seems as though you are doing it, hopefully you get better spool to make your car more "streetable" instead of getting beat by stock turbos below 100mph hehe

 

oh, those sound like fighting words to me!.....i kid, i kid......i remember that happen to me on a shitty ass tune...

 

Oh you are doing the deletes yourself? As in porting them yourself? If so, you have to plug the holes, preferably weld them shut, then make sure it still flows smooth... but you still want them rough inside or the air won't oxidize or whatever it is that its supposed to do lol. I don't know what it does, I just know it needs to still be rough inside.