Slight difference in size vs stock!






All the welding is complete, but need to drill and tap 3 more holes for the Brake Booster, BOV, and spare. That is why I welded the flange just above the TB cable mount. After that I need to pressure test to 50psi and address any pinholes.



The TPS is close to the firewall, which is why I had it shaved ~0.125". No getting around having to also shave the strut bar mount on the firewall, but I will not completely remove. It's just too close since the engine torques back under acceleration.

 

I can't wait to see the results 🛒. Are you still on SD? Would be interested to know where you go lean!

 

maf

 

The Hyundai manifold uses the smaller 14mm import seals (EVO X) vs the 16mm import seals (EVO 8/9). Unfortunately, you can't just swap the oring at the end because the lower body of the injector itself is too large as well. Therefore you have to replace the entire bottom portion of the injector that has the oring attached. They were $8/per shipped and should arrive next week. If this is confusing just go on FIC's site and look at the EVO X injector vs the EVO 8/9 where it mounts to the manifold.

 

I mocked up some spacers for the fuel rail, but I'll have a buddy of mine cut me some out of composite. Just need to pressure test and I'll install this weekend.

 

My super fabulous pressure test setup. Pressurized to 50psi and found 2 barely leaking pin holes so I went ahead and TIG welded shut.





I had to cut off the oil dipstick flange and weld it at a slightly different location. I went ahead and contoured the aluminum to make it look less fabricated.




I didn't want to completely remove the center mount on the firewall for the strut bar so I cut it back to gain additional clearance. I've gotten pretty good and doing metal work since I've been restoring my 71 240Z so I welded in a flat piece of new steel so the pics below just show the process. I hope to have this running tomorrow pending on whether I have to redo the upper IC pipe.

 

Cool, absolutely anxious to see your testing because you always have a ton of data lol.

 

Thanks, but unfortunately I'm still not done. I got it all back together today and actually started the car, but without the upper intercooler pipe installed. It was wishful thinking as I have to remake the upper portion of the intercooler pipe, which will be done tomorrow for just the main tubing minus flanges and fitting. I ordered a new Tial BOV flange as well as a 1/8" NPT and 3/8" NPT fitting for the Hobbs switch and GM IAT sensor and Amazon says those parts will be here this week.

Just a quick note, you can't put the manifold onto the head without removing the studs on either end so you install the manifold and then insert the studs.

 

That was easy...

 

Nice work Sir.
Do you have a guess how much low/mid range it picks up? 20-30WTQ?
Are you going to look at the plugs after a run incase one cylinder is leaner then the rest? Or is it rich enough globally to cover it?

 

Thanks, the only feedback I received was from Aaron @ English who said they did the swap many years back and it picked up a bunch of torque at lower RPM's, but he did not quantify the amount. That was with an unmodified plenum and I think they just cut off the strut bar mount from the firewall to allow it to fit.

I'm not going to check the plugs because I expect some differences at non WOT conditions. I would need per cylinder EGT to understand the differences in cylinder temps, but even if I had that information I don't think the trim function was created for the stock ECU. I used to log individual cylinder EGTs as well as pre/post turbo and I still have that hardware, but just don't care enough to go through the hassle of setting it up when the stock ECU doesn't trim. From memory with the stock ported intake, the distribution at WOT was fairly close so I chose not to trim despite being able to trim with the Haltech.

 

Just waiting on the 3/8" NPT filling for the IAT sensor and I'll be done. Although I run MAF, I want that sensor there just in case I go MOTEC in the future.

 

Coming along well! Motec is really nice but at that point I would suggest going DBW. It will make tuning and options easier.

 

How long do you expect me to hold my breath?

 

It just arrived as I was typing this response complaining about Amazon. I'll get'r done tonight!