ColtGT4g63 Posted October 6, 2009 Share Posted October 6, 2009 Okay fellas! Most of you know that I had previously had a turbo set up on the car. I was very dis pleased with it, got frustrated and removed it. I'm still glad that I did, because it ran MUCH better N/A then it did with the turbo. Well... the urge has hit me again, but this time I'm doing it a bit differently. For starters, I am re using the same exhaust manifolds but changing the 2 bolt flanges over to V band. For those who don't remember what the manifolds looked like, here is a memory refresher! I am also re using the same turbo. ( Ebay GT45 china turbo ) I have changed just about everything else that involves the turbo. my old Blow off valve set up - 2, 1st gen. eclipse turbo blow off valves did not work as well as I wanted them too. Every time the car was reved, shifted, or RPM's dropped the valves would open up and make a Hee haw noise. Hard to explain! This is what the old Blow off valve set up looked like. This time around I am using a Tial blow off valve, MUCH MUCH nicer I must say. Last time for a wastegate I used an Ebay 60mm wastegate. And guess what? I wasn't happy with that one either! The valve never sealed 100% so I was driving around with a permanent exhaust leak. Resulting in slower spool up time, and a false signal to my o2 sensors. This time around I am using 2, 38mm Tial V band wastegates. One mounted on each bank. New stuff: BLING! The cross over section has been changed as well. Originally I used some very thin 2.5" Stainless for this piece. I always had a fear of it being a little too thin, so I decided to change this section to 2.25" Schedule 10 Stainless with a flex section added. This is what the new cross over section looks like: I mounted everything up to my "spare engine" and welded it all together. I must say, it sure does make as a nice garage piece. And is a good conversation starter for all the Honeys that come over. It looked so awesome with out the turbo mounted, I decided to see how much more bad ass it would look with! I really forgot how big this damn thing is... OKay back on Track! Mounted up my wastegates, and welded on my flanges. So when I swapped the car back to N/A the first time. I had made a nice dual 3" exhaust with an X pipe. I really like how the exhaust turned out and did not want to get rid of it. So I thought of a way that I could have the turbo feed into the X pipe, and still exit out the mufflers. Whalla!!! It turned out pretty well i'de say! And the car is much quieter now, since its got a total of 2 mufflers, and a turbo to quiet it down. on my last set up I had a mesh screen covering the compressor inlet. This didn't provide much filtering, and allowed the turbo to suck in hot air coming off of the Driver side exhaust manifold. This time around I was determined to get some kind of cold air intake system going. Started off with making a big hole..... Had to do some serious pie cut action to get the radius's that I needed to make this thing go the direction I wanted it to. Believe it or not, this actually clears the strut tube AND the wheel at lock to lock. And will clear the wheel even more so when I swap to skinnies. The filter is not the biggest one around, but I feel better having a small filter suck in cold air, then no filter sucking in hot air. Next on the list is the fuel system, and fuel managment system. I wasn't about to run my old fuel system, which was the corvette regulator with a -6 line feeding to the front. This time around I added a -8 feed line to the front. Feeds a malory fuel pressure regulator with a boost reference vacuum port. and returns through a -6 line back to the tank. For my fuel managment, I ditched the stock computer all together and went to a full standalone system. I chose to go with the Mega Squirt V2.1 For those of you who haven't had a chance to play around with MS, you're missing out. Its very user friendly and easy to tune. I would highly recommend it to anyone. I made a jumper harness to go between the stock GM harness, and the MS unit. So if I really wanted to, I could plug the stock PCM back into the car. ( No idea why I would want to, but yaa) Running the car in speed density is pretty sweet! And not having o2 feed back is nice too. So this brings me up to my current state. i've got the car running, Part throttle map is pretty much done being tuned. I've put over 100 miles on the car since the turbo swap and have not even felt one hicup. Seems to run pretty good! Once I can schedule some dyno I'm going to get some WOT tuning done. Just wanted to share with you all where I'm at with the car. Here are some pics of the final product. Quote Link to comment Share on other sites More sharing options...
Turbo Meister Posted October 6, 2009 Share Posted October 6, 2009 Looks good. I like it. Quote Link to comment Share on other sites More sharing options...
mobythevan Posted October 6, 2009 Share Posted October 6, 2009 Cool, always good to see megasquirt LS1 installs. Quote Link to comment Share on other sites More sharing options...
sq_creations Posted October 8, 2009 Share Posted October 8, 2009 Very nice set up. I hope to have mine done in the next couple weeks. Quote Link to comment Share on other sites More sharing options...
a6t8vw Posted October 9, 2009 Share Posted October 9, 2009 Good job man Quote Link to comment Share on other sites More sharing options...
jeffer949 Posted October 9, 2009 Share Posted October 9, 2009 Glad your back at it! I was disappointed when you gave up on your old setup. I like the MS install also Quote Link to comment Share on other sites More sharing options...
Guest NESS89 Posted October 10, 2009 Share Posted October 10, 2009 Man thats sweeet, i want turbos now. Quote Link to comment Share on other sites More sharing options...
turbotalon1g Posted November 8, 2009 Share Posted November 8, 2009 hahahaha, you cant stay away from turbos. Glad to see you are back. Badass. Keep up the good work. Quote Link to comment Share on other sites More sharing options...
ColtGT4g63 Posted November 8, 2009 Author Share Posted November 8, 2009 Thanks guy! Ya I really do like having a turbo on the car, lots of fun! So I just took the car to the track Friday night, but have to say that I'm disappointed with the results. Granted I am only running 7 -8psi, I have run better E/T's and MPH with my N/A set up. Best: MPH > 98.4 E/T > 7.02 60ft. > 1.48 That is by far the best 60 foot I have ever pulled in my life. Car just did not pull hard up top like it should. AFR is mid 10's, timing it 14 - 16*. No knock, Feels strong. I don't know whats up. more boost maybe? When the car was N/A I've run a 7.002 @ 100mph. And even hit 102mph. Quote Link to comment Share on other sites More sharing options...
turbotalon1g Posted November 8, 2009 Share Posted November 8, 2009 Nice, its the first time with this setup at the track, next time I would aim to better that time, but with turbo power shouldn't most your gains be on the back end? Quote Link to comment Share on other sites More sharing options...
jeffer949 Posted November 9, 2009 Share Posted November 9, 2009 Mid 10's is way to rich!!! lean out the top end to 11.75-11.5. I can notice a huge difference in power when my car is tuned 11.5 or 10.5 Quote Link to comment Share on other sites More sharing options...
ColtGT4g63 Posted November 10, 2009 Author Share Posted November 10, 2009 I'll tune for mid 11's on race gas. I'm on a pump gas mix right now and want to keep things a little on the safe side, then the sorry side. Back in the DSM days I would shoot for 11:1 on pump and mid - high 11's on race gas. Something is still not right though, I've trapped 102mph in the 1/8th on my N/A set up. 4mph less with a turbo don't seem right. Quote Link to comment Share on other sites More sharing options...
Turbo Meister Posted November 10, 2009 Share Posted November 10, 2009 My engine always likes a lot of timing. Race fuel also requires more timing in my experience. All engines are different but I would suggest inreasing the timing, little by little, until she blows up! Quote Link to comment Share on other sites More sharing options...
ColtGT4g63 Posted November 10, 2009 Author Share Posted November 10, 2009 My engine always likes a lot of timing. Race fuel also requires more timing in my experience. All engines are different but I would suggest inreasing the timing, little by little, until she blows up! NOW you're talkin! I was thinking about turning up the boost a little. And keep putting timing in it until I start seeing knock. As of now, I'm not getting any knock under WOT. What CR are you running? and how much timing / boost? What AFR at WOT ? Quote Link to comment Share on other sites More sharing options...
turbotalon1g Posted November 10, 2009 Share Posted November 10, 2009 What are you using to tune? can I get a log. Quote Link to comment Share on other sites More sharing options...
ColtGT4g63 Posted November 10, 2009 Author Share Posted November 10, 2009 What are you using to tune? can I get a log. I'm using HPtuners, with a MAF. Its rather ghetto. Whats your Email? Quote Link to comment Share on other sites More sharing options...
Turbo Meister Posted November 14, 2009 Share Posted November 14, 2009 What CR are you running? and how much timing / boost? What AFR at WOT ? 8.5:1 40*-1* per psi of boost with MSD BTM(15 psi) Found out Thursday night at Irwindale that WOT is 9.5 AFR. Will go to BOTI at Fontana next week and jet down. Quote Link to comment Share on other sites More sharing options...
Slammed68 Posted November 14, 2009 Share Posted November 14, 2009 A friend of mine with a STOCK with a ZO6 cam and rod bolts ONLY LQ4 6.0L, and a Master Power turbo, put down like 680rwhp on 7 lbs... Sounds like your car has some issues that need addressed . Quote Link to comment Share on other sites More sharing options...
ColtGT4g63 Posted November 14, 2009 Author Share Posted November 14, 2009 A friend of mine with a STOCK with a ZO6 cam and rod bolts ONLY LQ4 6.0L, and a Master Power turbo, put down like 680rwhp on 7 lbs... Sounds like your car has some issues that need addressed . Thank you kind sir! Quote Link to comment Share on other sites More sharing options...
rustorbust Posted November 15, 2009 Share Posted November 15, 2009 Yea put some timing in it........ Quote Link to comment Share on other sites More sharing options...
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