F8L Z71 Posted September 3, 2004 Report Share Posted September 3, 2004 Ok, finally got my OBX FMIC installed yesterday. Took a lot moe fab work than I thought but it was all actually quite easy the way it went together but had it not been for Rick at Synergy Motorsports it could have been a lot worse. That guy gets INTO his work. I think he actually got a stiffy when he seen how the piping would go together so easy. :eek2: Hahaha Anyway. We removed the lower air dam to give us some room to work and quickly realized this IC is too long to tuck between the frame rails and would block flow to the radiator if we mounted it behind the grille. So we ended up notching the frame with a plasma cutter which created a slot for the IC to slide up into and tuck high enough so that when the airdam is on it wont hang below it. We then made simple mounting tabs for the IC. There are 2 smaller pieces then welded onto the bottom of these brackets to create an L shapre with a hole on the bottom to screw the IC to. Here is the IC mounted into place rock solid. My buddy that came down for the install was almost literally hanging from the ends and it wouldn't budge. Here is the intake piping on the passanger side of the motor. We simply adapted new piping onto the original STS piping that came up from the wheel well. Here is the driverside piping. Passanger side piping Exit piping with MAF sensor and ALKY injection leading to TB. With the airdam back on. I kinda want to cut out part of the center piece for better airflow and to see the cooler better.. Now for the results of our labors. We took the truck out for some street tuning with a wideband O2 and some diagnostic software. Ambient temps were about 70deg at this time. We noticed that sitting idling the IATs were at about 104deg. As soon as we rolled onto the street which took all of about 30sec we had already dropped to 90deg or so and once we got rolling at 40mph they dropped to 82deg. Cruising around my static IAT seemed to stick at about 10deg over ambient. Prior to the IC my IATs were 120deg no matter if I was on the freeway cruising or what. We started testing at low boost which was 6psi prior to the IC install. At WOT the boost needle would move around A LOT more than it used to. It used to just come right up and stick at a # and never move till I lifted. Now the needle would jump up to about 4psi and maybe slide up to 5psi or hit 5psi rigth after a shift but then settle back to 4psi. IATs temps rose to no more than 88deg after a 20mph-100mph run. Funny thing is that with the now much cooler IATs the 4psi felt at least as good if not better than 6psi without the IC. IATs on 6psi before the IC were 140-160deg. From there we tried high boost which was set at 11psi solid before the IC. In high boost I only saw 8psi now with occasional quick spikes of 10psi depending on gear and shifts. My 8psi now felt better than the 11psi I had before. Woot! So we did a BUNCH of 25-100mph runs while data logging and tuning. We were getting ZERO KR. IATs were still in the low 90s at the end of a full run and then drop like a friggin rock after lifting. I swear it would take maybe 20sec before I would drop 10+deg of IAT. IATs at 11psi before the IC were 190deg avg. So now we decided to up the boost. We eventually got it to 12-13PSI before we got any hint of KR and we were not even sure if it was simply from being too rich in 3rd gear. The wideband was showing 10.8 AFR in 3rd gear in high boost. We dropped timing to about 16deg or so and would only get the KR every once in awhile and didn't look to be form going lean at all. We decided to leave everything right there and just run it a tad rich since the area I live in is always much more hot than the Bay Area and I wanted some safety. On the 12-13psi runs form 25-100mph I maxed out with 107deg IATs!!! :eek2: The really creazy thing is that prior to the IC install my IATs at 13psi were 240deg which even the methanol couldn't fix. One interesting note. The truck ran leaner at 4psi than it did at 13psi and ran richer overal when doing a 4wd run. We decided to tune it for high boost and in 2wd since that's how most of my racing will be done and it keeps me safest overall. In all I am VERY pleased with this IC and the work done at Synergy Motorsports. My truck pulls like a monster now (for a big truck) and I even got to totally humilate a poor 96-98 Mustang GT on the freeway on the way hime. Poor sap tried to do a fly-by on me. He started about 4 car lengths back and floored it. By the time I realized what he was doing my buddy yelled "nail it!" so I look over and he blows by me so I mash it and he already has 5 cars on me by the time boost builds but as soon as it does I know he is in trouble. I start catching up faster and faster and by about 125mph-130mph (guessing from how long we had my 100mph speedo pegged) I was blowing by him FAST so I lifted just as I passd him so he could hear the turbo flutter :drive: . He didn't look too happy and vered off the next exit really fast. LOL Link to comment Share on other sites More sharing options...
zippy Posted September 3, 2004 Report Share Posted September 3, 2004 very cool. you are certainly SS official, you brought pictures. Link to comment Share on other sites More sharing options...
F8L Z71 Posted September 3, 2004 Author Report Share Posted September 3, 2004 very cool. you are certainly SS official, you brought pictures. LOL Thanks Zippy. I even told the guys at the shop to back away so I could take pics because if I didn't the guys st SilveradoSS.com would flay me! Hahaha Link to comment Share on other sites More sharing options...
deezel Posted September 3, 2004 Report Share Posted September 3, 2004 Sounds like that IC works pretty good with your STS kit. Nice job. Link to comment Share on other sites More sharing options...
F8L Z71 Posted September 3, 2004 Author Report Share Posted September 3, 2004 Ohh, forgot to mention this is with no Alky at all. I'll just save it for when I have enough money saved up to risk breaking stuff and upping the boost Link to comment Share on other sites More sharing options...
BenKey Posted September 3, 2004 Report Share Posted September 3, 2004 Thanks for the pics and results. Is it possible to get a straight on shot? I want to get a feel for how much it hangs below your bumper. You could just email it, if you're BW limited. Also, did it affect lag any at all? Maybe I missed that? Link to comment Share on other sites More sharing options...
BigTex Posted September 3, 2004 Report Share Posted September 3, 2004 Wow, if you've dropped your IATs that much, you've just gained a lot of power. Very nice. I personally think the STS kits should use an intercooler (so should Whipple). Link to comment Share on other sites More sharing options...
F8L Z71 Posted September 3, 2004 Author Report Share Posted September 3, 2004 My batteries ran out before we were finished so I could get a pic with the airdam on but it doesn't hang below the airdam. It actually looks pretty decent and I may trim some of the airdamn to aid airflow but testing last night showed it didn't help much at all. I'm gonna get some pics here in a lil bit though and post em up for everyone. As for lag. I did the .81 housing swap at the same time and I still have less lag than I did with the .96 housing and no IC. Lag is still present but it is tolerable and doesn't hinder me at all in a drag race situation like it used to. I can stall it up and launch with a best of 7psi so far and the truck just rockets out of the hole with TQ steer and everything. The top end is equally impressive if not more so I feel that this was the perfect turbo combo for my application. Link to comment Share on other sites More sharing options...
BenKey Posted September 3, 2004 Report Share Posted September 3, 2004 7psi launch?? Bet your tranny loves you What about the new MAF location? Have any length issues with the stock harness and how did you run the harness? Link to comment Share on other sites More sharing options...
smithl3 Posted September 3, 2004 Report Share Posted September 3, 2004 I like it, a lot Keep on posting the pictures, some vids too wouldn't hurt. Link to comment Share on other sites More sharing options...
F8L Z71 Posted September 3, 2004 Author Report Share Posted September 3, 2004 7psi launch?? Bet your tranny loves you What about the new MAF location? Have any length issues with the stock harness and how did you run the harness? Rick thinks the new MAF location is good because it is a little closer to the TB but mainly happy because we kept at least 8"s of straight tubing before and after the MAF to keep the airflow straight. We had to solder in new wires to extend the MAF is all. Pretty simple stuff. Link to comment Share on other sites More sharing options...
SuperSport Posted September 3, 2004 Report Share Posted September 3, 2004 Great results, i am definitely appreciative of your work on this since i just bought one of these intercoolers for myself. Now you just have to get to the track. BTW: did you upgrade your fuel pump yet and which one did you go with if you did. Link to comment Share on other sites More sharing options...
speedy Posted September 3, 2004 Report Share Posted September 3, 2004 Your IAT's went down 133*@13psi with the OBX IC.. Impressive I thank 12's are in reach now.. Link to comment Share on other sites More sharing options...
styleandspeed Posted September 3, 2004 Report Share Posted September 3, 2004 About how much did this cost? Also, do you think one that actually fit inside the stock framerails would be efficent enough? Aaron Link to comment Share on other sites More sharing options...
SuperSport Posted September 3, 2004 Report Share Posted September 3, 2004 where did you get that extra aluminum tubing and where did you buy those silicone 90* bends Link to comment Share on other sites More sharing options...
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