HELP! advice on turbo for LS
 

I have not been on here in quite a while but can usually turn to HMT for advise

I have a turbo LS and am running an Innovative GTS61 @14lbs that I got off a friend for super cheap but its got to much lag for what I want. I am looking to make a little over 300whp, spool fairly quickly and be fun on the street. I like going out on back roads not the strip.

Any help would be appreciated, I have owned a few boosted cars but am retarded dumb at knowing compressor sizes etc. I just dont want to take a wild guess when buying a turbo

thanks!

Re: HELP! advice on turbo for LS
 

cdm t3t4 works great!


10 pounds easy around 4500 rpm and pulls hard!

i rocked mine at 16 pounds for a few weeks when i had wg issues and it was realy sweet did som really dirty 3rd on the gsr trans

Re: HELP! advice on turbo for LS
 

+1 for a cheap ass t3/t4 off ebay. Had mine for over a year now, and spools pretty good. Around 3500-4300 full boost with no cat and 2 1/2 exhaust.

Re: HELP! advice on turbo for LS
 

rock a hx35 and be able to support 500hp. spool low 4000's

Re: HELP! advice on turbo for LS
 

Turning up the boost makes the car feel a lot less laggy. If you are on twisties, likely the turbo is too big as you can't crank the boost up as high as you need in that environment to keep it from spooling down between shifts.

Avoid the china turbos on eBay. I've yet to see a good one, and every one who praises them typically has oil all throughout their intake tract or huge amounts of thrust play and have no clue. :1

Re: HELP! advice on turbo for LS
 

If it was a stright-line weekend car I'd say join the bandwagon and get a 57trim.

But since you are one of the .0000001% of Honda owners who actually gives a crap about boost/throttle response, your needs are much less ordinary. 300whp can be achieved, even on an LS, with a 60trim T3. However, you'll need a little more boost than you may want if its not a built bottomend. A 50trim t3/t04e would be a better choice with a stock motor is you want to play it safe. You'll need more boost than a big turbo for that whp, but thats a benifit not caviot if you're still below 20psi.

The people who say either turbo isn't enough for 300whp are the fools still married to their stock MAP sensor. Some people will change EVERYTHING except a simple little sensor. Pushing a small turbo that fits your current goals is like graguating from dirty hookers to professional call girls - its a whole different world.

Re: HELP! advice on turbo for LS
 

with the ebay ramhorn my buddy had his garrett t3/t04e .63/60 to spool about 3k making a full 15psi by 4k on a bone stock ls 2.5 in exhaust. noticed with my car having a bigger turbo was always fun for the highway but i really did miss the instant spool of a z6 with an ihi turbo.

Re: HELP! advice on turbo for LS
 

If you could come across a EVO 3 turbo (aka the big 16g) it would be a well matched turbo for you and actually spool fast enough to do something. It shouldn't really be confused with the 16g as the big 16g has a lot more potential for high boost and high hp 1.8L-2.4L engines.

Either that or try to find a Borg Warner k26-2 from a early 80s Porsche.

Re: HELP! advice on turbo for LS
 

That's also a decent turbo too. Make sure you were to get a 0.63AR hot side and not a 0.48 though. On that power goal the small AR turbine housing would start to cause a lot of exhaust manifold pressure.

But really, crunch some numbers and take a look at a big 16g and a k26-2, they are a much better fit.

Re: HELP! advice on turbo for LS
 

The size of the turbine wheel make a much larger difference than the AR of the matched housing. There are five sizes, which are you referring to? THe smaller sizes will spool akin to a 16G, big or small. The middle of the road stage three will have any of the 1.8 liter Hondas spooling at 2500 rpms.


I really doubt that the K26, which isn't a Borg even if they have since been bought by Borg fifteen years after being produced, is going to be that great. All of the aircooled car's turbos were sized large so they didn't retain a lot of heat.