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Lusting for a twin turbo setup, and would like (helpful) ideas

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142K views 1.5K replies 96 participants last post by  Telion  
#1 · (Edited)
First I apologize for the serious teaser and putting up pics of a project without results and dyno's because there are none. And who knows how long it could be before I go any further it could be a year or more! I just love hearing the ideas suggestions, feedback and knowlege you all have to offer. Isn't that a bulk of what we are here for? :) Well as many of you know I am currently underway with the Supercharger setup. It has been a very slow process but is still underway and the manifold for it is now being welded from what I understand.

I could not get over how much I loved Hotlava's tt setup and it overcame me. So I figured at some point in the future I also wanted to do a tt setup and began slowly buying the additional pieces it would take to do so (being that many are the same, such as injectors, fuel pump monitoring gauges and what not). Then last week my car decide to get some garage time (it broke down later found to be a broken axle, Ebay? I think it was tsk tsk). But none the less it was a perfect excuse to play while she was down so I started to look at how I would eventually want my tt to be setup. What better way than to play. It helps kill concepts that look good in your head given the (not so) workable space; a few of my ideas have since died. But long story short this is where I am at so far. Now that my wife knows that it is just a broken axle I only have shipping time to continue playing before having to put her back together again.

A couple quick notes

-No this will not be done/completed for a very very long time.-This is very new to me so I would be the last to ask for suggestions though I love to share ideas.
-Yes the supercharger project is still underway and taking precedence over this.

-No I did not wake up one morning and say I am going to do a Legend Twin turbo setup during breakfast (sorry Hybird, that just kills me lol)
-No I am not going to be using PVC intercooler piping it is just cheaper to hack away at till I figure how I am going to do it when the time comes.
-I have also read up on some articles of Twin vs. Single and each seem to have there advantages from knowlegable members of their respective forums.
-cheap clamps will be replaced with t-clamps.

Ok the book is done here's the pics. (excuse the mess my garage is at war)
also please forgive the ugly "stand in" mesh and terrible paint, looks will come last. I don't want to tear it up after doing body work and paint.
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This one concerns me, there is not much rook and there is a damn brake fluid line that may need to be relocated. wires and hoses I don't mind moving brake, AC, and power steering lines I am not so happy/experinced with.
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Hopefully at some point I will be done destroying my car and be able to build it up like the one in my head lol.

-Tip- If you get a new intercooler or radiator, cover the fins with cardboard until it is fully installed so you don't damage the fins during installation :hide:

PS. The purple finish and and nice shiney engine bay will be back in time. it was too hard to maintain and not scratch to hell while getting a bug of some sort and doing stuff like ^ this. I think eventually I will powdercoat vs. paint though.
 
#1,397 ·
alot I will do a real fast run down of the main items, some things you will need to find though.

Keep in mind these are the basics and not really everything but a good start and does not include engine management or a wideband. You would need at least a missing link and an SAFC.

Garrett Turbos (including rebuild) $700 with family discount
intercooler $200
Waste gates $460
piping about $300
blow off $100
gauges (psi oil water) $200
filters $80
oil lines $75
vacuum lines $50
radiator $260
radiator hoses (got lucky) $35
fuel pressure regulator (got lucky) $65
fuel filter $40
couplers approx $100
fabrication $priceless
 
#1,403 ·
On this I will have to refer you to the first post and urge you to set aside an hour or two to read through the whole thing if you are really going to do this many if not all of the mistakes I are in here and a couple of hours will save you days of grief and possibly great deal of money.
 
#1,401 ·
Thank you and that would be nice but I am really only about 3/5th's done

still some minor fabrication corrections, a great deal of tuning to get the F/IC to work it's not currently in the car (hence the CEL's) and I still have to add the water injection.
 
#1,405 ·
Manifold Pressure Sensor..

The Search is your friend Nooby.

looks like someones Gonna need Taller gears In a minute. Once you tune it that slight lag will be no lag, and you'll be shifting faster than you can blink.

Congrats on the Build, Now lets see some time slips!
 
#1,410 ·
in your new video telion, its seems like you got quite a bit of wheel spin that time, your speedometer went up to a little over 35 mph then dropped to around 25 mph when you shifted, i guess traction is going to start becoming an issue with you turbo guys
 
#1,412 ·
Sorry about that though I don't think Dethred meant disrespect I think he was stating something that was harder for me to see at first not sure what else to say about that so.... I did understand the comparison and was speaking lightly about the 230 vs 330 situation.

but yeah there there was a bit of wheel spin in the last one but it can be controlled so traction is only an issue within the abilities of the driver and the condition of the surface (I was taking off from the side of the freeway and launched a little do to cars coming up on me at 60 mph).

Plus there should be no disrespect to the speed of your car, you do have the most NA power and that should be and is respected.
 
#1,415 ·
Not yet I will likely do that the next time I pull the engine.
 
#1,416 ·
#$%^%$ I received the spark plugs today and they are 6E not 7E :( aggravating. Oh well they will be ready to be pulled in a month or so anyway I guess.
 
#1,418 ·
No worries man, right now I am just wishing I could go through all 3 gears under 3/4 throttle. This issue has me wondering whether it would be worth it to take it to the track Friday since none of the people in the stands would know ahead of time that it is not don yet lol. But I really wanna see what she can do in this early stage. no one local has a missing link as a temp fix and I don't want to buy one for temporary use. I am thinking that I can just zero out the adjustments on the FIC, lock the voltage to the MAP sensor at 4volts or so and richen it a little after 3k. But then I am compelled to realize that it and the ECU are not exactly getting along at the moment anyway grr I want soo much soo fast.
 
#1,419 ·
don't risk your engine, fix the problems then take it to the track, I know its hard to wait but it will be worth it later :p
 
#1,420 ·
I don't know if you saw this about the IAT sensor... Found this on Prime.

The FIC has no "boost cut" feature like the AEM EMS. So you'd better have a turbo setup that doesn't suffer from boost creep!

Simply put, there is no IAT compensation table built into the FIC software. You'll have to build that safety factor into the timing table.

However, since the factory computer already adjust's timing based on IAT's and since the FIC modifies the factory signals, timing is adjusted proportionately. You'll want to log running conditions prior to the FIC installation to confirm running conditions, especially if using a CTSC where IAT's are significantly warmer than NA. On the contrary, our turbo setups have always shown significantly colder IAT's than NA, so we are able to use more timing while maintaining adequate safety levels.
yeek... no iat compensation?

wow for all the boost comp guys, ie me included, its going to be heck of a sell.

how do you guys log stock ecu changes over time? im always interested in a more cost effective solution but if it does not have vital controls such as iat compensation and just leave it up to the stock computer to figure it out it sends chills down my back.

my main concern was what the stock ecu was going to do but now with the lack of iat control, it looks like a deal breaker.

btw your cars are showing cooler iats then na.... how many lbs are you guys pushing and what intercooler setup? whats the secret.

my iats go off the charts when i start making boost and need meth to keep the madness in check... but im running 29psi and on a crappy intercooler so probably a different story.
I heard through the grapevine that my statement above was taken wrong.

The stock computer IS STILL COMPENSATING based on IATs and any other number of parameters. I meant to say that the FIC has no seperate "IAT compensation table" built into the software. There is no significant reason to because the factory computer already takes care of this.

Looking back, I now realize my IAT statement comparing NA vs. turbo IAT's is slightly flawed. The reason? The IAT sensor for the car in question was placed post intercooler and pre-intake manifold. NA IAT's are sampled from the intake manifold that is usually slightly heat-soaked, which will read slightly higher than an IAT sensor placed in the charge piping. Sorry for the confusion there! I had simply forgotten that the IAT sensor was placed in the charge piping.

However, our IAT's are still kept in check amazingly well. At 24psi, we were only seeing 120 degrees in an 80 degree ambient dyno cell. One time last spring, it was 32 degrees ambient and we were seeing IATs around 40 degrees. Pretty efficient either way you look at it!
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#1,421 ·
Good stuff there, now I wonder the best location for my IAT lol. I also remembered why I was able to maintain 11.6-12.5 AFR under boost and why it dipped into the 10's after 5k. four letters AFPR (adjustable fuel pressure regulator). Hmm forgot about this lol yeah silly me. so now I am just going to work backwards as far as that goes and slowly lean and test the map for a consistent AFR based on what I had forgotten after backing off timing about 1% for every 1lb of boost. Yes I am sort of going about this backwards but I am learning ugh.
 
#1,423 ·
Ok NSXPrime was not much help there seems to be a lack of understanding to my request. They thought I was going to run my car with an FIC map that one of them had. I really just needed to see the setup file and what areas in each of the maps the tuners that tuned their cars were changing. But as suspected they held nice and tight to their sacred info. I was hoping to be able to get a little street tuning jump on this before handing the car over to Cortney.

On a positive note zeroing out the maps seemed to cure one problem but I may have caused another yesterday,here's the good. I seemed to have been able to lock the voltage on the map sensor at 2.83 volts through the F/IC. I assume so because I was able to push it past 4k in 3rd without throwing a CEL, this is a first.

Now for the bad, ever since yesterday she has been throwing a code15 (ignition output signal error) I am hoping that it is as simple as replacing the igniter but it is never that simple lol. well anyway here was the stupid act I may have mentioned it before but turning the car off and then back on, Not such a good idea in hindsight, the issue had popped up ever since. Well enough for tonight here is a little vid (more like a sound clip lol) of the test can't see much and I was not pushing it as the goal was just to check for the code3 and I didn't have the wideband with me (I am still speculative if the F/IC's getting along with the ECU)

but first a little teaser pic of the gauges they don't look as good in the pic as they do in real life but that's ok the rest of the car is just the opposite lol, can't have it all (yet).
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http://i300.photobucket.com/player.swf?file=http://vid300.photobucket.com/albums/nn20/Telion007/Videos/DSCF3422.flv
 
#1,424 ·
I got Both code 15 and 2 on the way to nalm. Code 2 was my right 02 which had been driving my car crazy, code 15 was actually triggered by my head unit which i installed and didnt bypass the amp. If you arent continuously throwing 15 i would just ignore it.
 
#1,425 ·
your Amp WTF what was the deal with your amp causing that code? I have been getting it more today then I did yesterday but as a measure of precaution and testing I am going to swap the igniter.
 
#1,426 ·
dunno, it happened when i was putting the after market head unit in and not bypassing the amp and I was putting it in with the car in run and the auto shifter in first(for clearance) but the car off, and hadnt disconnected the negative bat cable. and it just triggered. I figured some kind of feedback.
 
#1,427 ·
odd,...
 
#1,430 ·
damn you Utes and all your performance gatherings :) When are yall gonna invite us Arizonan's over?

maybe I can just hook up to Tyson's bumper one day and have him tow me