Keeping ac was one thing I liked about the aps twin kit. There is very little that must be modified with the kit. Alt stays in stock location. They supply a trick looking coolant overflow and battery tray and also beautiful windshield washer reservoir. Kit is very stealthy with only the intercooler script showing when you pop the hood. Spark plug access is decent as well with stock type manifolds.

 

http://www.ls1gto.com/forums/attachm...9&d=1234564963

Found this dyno showin the kit pulling to near 7000. It was a 402 or 403 build. Not making that much power at the boost level but think auto car and was pretty low compression.. in the mid 8s.
I am running 9.5 to 1.

What did you say your compression ratio was ?

 

So you are running these injectors from Racetronix..they are plug and play with no harness adapter?

http://www.racetronix.com/product/Injectors/621002.jpg

 

Yes i still kept the AC and no i do not have any overheating issues. The hottest the car has ever gotten after a run is 198 on a 85 Degree day but it came right back down after that.

I think that the power dropping off had to do with the springs also i didnt ever pay attention to the boost but I think that it would peak to 17# then back down to 14# or so. Thats why I am very eager to get my 10# springs in there. On the 10# run it hit max tq around 3700 rpm at 742 tq and hp peaked at 6000 rpm at 700 hp before dropping off.
On the 17# run it hit 944 tq at 4200 rpm and hit 837 hp at 4700 rpm and then dropped to 730 hp at 6000 rpm. I think it was the springs I will find out next week hahaha. I only did 2 runs and I didnt think about looking at the boost til I allready had the car on the trailer so next time.

I have 1.8 rockers and i know I have more then good enough springs. The heads i really dont think are going to matter that much these heads flow just fine and are great for boost.

Stock tranny can take quite a bit of abuse. There are many cars around here making above 700 or soo HP that have stock trannys.

The timming is not aggressive at all so there is still much left in the car i cant remember what timming we had in it.

No sway bar at all i didnt feel like having to mess with making one work after all the other things that went on with the car in such a short time. It handles just perfect on the street.

The injectors are the new racetronics 79# high immpedance injectors that they came out with a year ago. Idle is just fine and driveability is great also but that has a lot to do with tunning and I have to Thank George at Boost Performance for all that.

The neck yes I could not stand the look of it I just need to make everything look good in the car LOL. The radiator was a pain to put in but just work at it slowly and it will go in just fine. I do still have the power steering cooler, and the rad hose all we did was shorten them up to fit. And trust me it is a tight fit. I did run the stock fans also. I will post a pic to show you how tight it is.

 

Has anybody dynoed the large aps kit?

 

Great #'s, the car looks really nice.

Fwiw if boost is dropping off at the top end that would not be because of the wastegate spring. (It would continue to do that with any base spring).

With an Eboost2 you can adjust duty cycle vs rpm to keep the boost from dropping up top. Not sure if your controller has that feature.

Also it's been mentioned but you will want to make sure that you have a very good valvespring in there, especially with your cubes/turbos the backpressure will make the exhaust valve hard to control.

 

Patriot duals or PRC's will fit the bill, correct?

 

And thats what i have PRC's so im not worried about that. I think it might be just the size of the turbos not being able to push that much air at a higher boost and higher RPM. Let me know what yall think.

 

great numbers!! I think you are prolly out of turbo for that 403

 

Here is from guy on vette forum. He has aps kit on 402 ? 408..

Originally Posted by vegasredz062
Nick, thats Doug (yes he is clean cut guy ) super nice guy and down to earth.

thanks for the info Nick, it was set at 2.5 on the eboost, as soon as doug set it at (i think 5-6 .) the boost held all the way to redline. where before it was falling off.. so that is one thing we will look at next time.

Just something to try but as said not sure you boost controller can do it.
Also it don't really matter if the turbos can't do 20psi and hold it if they can get to say 850rwhp at lower boost with some more tuning or maybe different heads or cam.

And we all know not really much actual difference between having say 800rwhp and 850rwhp its still crazy power for most sane people. My car seemed very quick at only 7.5psi with my build 408. Can only imagine it at 15 psi or so.
The turbos should be maxing out around that 50 lb per minute point. Which is about 1000engine hp. If someone can simply read off airflow you can see what you are getting. I monitored my 97 talon but not sure never monitored twins..Will it show double the airflow?
Remember if you want a bit more can always run some spray on top. And of course there is LG doing upgrades. Haven't heard any updates though from LG lately.

Remember this stuff can never end. First you want 800rwhp,then 1000 then 1300,1500...
I am trying to stay happy with current power.Already car is more traction limited than power limited. A nice place to be.

 

cant wait to see what my LS2 with tfs heads puts out at that boost level im hoping to brake 800 easy. well i looks like it will happen at this piont this is good info guys thanks.
mean 01 your car looks great man nice job i cant belive how low that power came in what gear do you have? im running a 3.42 with my M6

 

I really need to get off my *** and install my APS STAGE 2 KIT !!!

Nice # and car you have !

warren

 

Are people having turbo problems with the upgraded turbo kits?

If you put an upgraded turbo kit on a stock 346 what would it do? Would the lag be bad?

The only thing that has gotten me away from the APS kit is the turbo problems.

Nice build. It's insane you are putting out over 1000ft lbs at the crank.

 

Wait a minute. I just re read the title to the thread..this is the base turbos not the upgraded ones?

Great googly moogly.

 

I will probably be trying some new turbos in a few months. I love the power but you know how it is i just want more. After i went from BFG to my new Mickey I was actually putting the power to the ground. Hope to get to the track in 2 to 3 months just depends on the cage.

 

im coming for you man im looking to push 1000wheel when i get back to the states i had BFG drs they suck for what we are doing
im also looking for bigger turbos

 

I wouldnt recomend BFG to anybody pushing big power they couldnt even hold at low boost 10 psi in 4th gear. I put the mickey on Friday and took it out and was grabbing 3rd no problem. I will probably start looking into bigger turbos soon might give LG a call to see what they have come up with. I have already talked to Peter at APS about upgrades time will tell.

 

im already waiting for info from LG they are still diging up info on this, about what is going to be best i guess. ill pass it on when i get for you

 

Sweet, Thanks for the info

 

Here is a link to the 17 psi dyno pull 837 RWHP 944 RWTQ

http://www.youtube.com/watch?v=aocvk-rt2E0