It doesn't work that way. It's a piece of the system... and you've got to design the system properly to make use of this particular piece. Keep in mind, you're going to be in new territory... so plan on a LOT of trial and error with your tuning.

Just a thought... sometimes "a really good price" isn't why you should buy something. Make sure it's what you want to build your system around. If not, you may end up spending more when you shelve the Turbonetics for some other model. We're all subject to this problem... I've already started collecting scraps for my "tried and failed" shelf

 

please,to all wanting to try bigger turbos.let's just remember what we have here. don't get me wrong,i want the most out of my car,but not to the point where it's running like crap and i'm running to some expensive tuner to get it worked out. we have an hhr ss. not a race car or some super import(supra,evo,skyline,etc...) sometimes trying to find that quick instant glob of power is far more trouble than it's worth.

so far,i have not heard a solid answer on what size injectors we have. all i hear is "the lnf is more than capable...". of what??? going boom??? imo, max out the car with the bolt on's. see what it does and go from there. even if it means to wait on the vendors to get every bolt on out there ready. look,by the time the CAI and bov are ready with a true turbo back exhaust,i'm not even interested in a bigger turbo. and by the time you get every bolt on to be had,a tested and tried turbo upgrade should be out or coming around the corner. all but,2-3 people have an ic kit for god sake lol.to soon for us to be worried about bigger turbos. to each his own though.

 

Agreed.

 

the way i see it, these "super imports" as you call them, had to start somewhere too. just because it's a slightly unorthodox vehicle to be looking for big performance out of, doesn't mean it cant or shouldn't be done. for instance, look at the MK3 Supra, that wasn't exactly a monster from the factory, but had people not put the effort into it like they did, the MK4 wouldn't be nearly what it is today. the only thing stopping these cars from becoming the next big thing in the auto scene is people's mindsets. now obviously these aren't ever going to become world-class supercars like an R8, ZR1, GTR, Ferrari, etc because their platform simply can't tolerate the kinds of things those cars are created for, but there's nothing stopping us from breaking into the world as a multi-purpose alternative to the Cobalt SS/TC and earning just as much respect as those are destined for, or even the respect of some of the greater players. the only thing holding the HHR SS back is the lack of people with the desire to try. we have a few people on here really gunning for earning their respect. these cars have the potential, they just need someone to get them out there! we will never amount to anything in our scene if no one shows what these cars are really capable of with some work, to get the interest and attention of the big aftermarket companies.

 

nevermind. i see people are misunderstanding what i'm saying. let me ask this. if someone gave you a free turbo,tested it for two days,would you slap it on your ss??? so far,the only people i know that know this motor inside and out is HRC. i'm not kissing bill's backside,incase someone had something to say,but alot of us don't know much about the motor to be going with turbos now. hey,if you want to go ahead and be the first,more power to ya. i will stay off this thread now.

so,the question i asked earlier,what do the stock injectors flow??? gotta be able to keep up with that bad ass turbo...

the mk3 supra,which i know the 7mgte,was easy to get power from the factory. the weakness...headgaskets. fix??? MHG and arp head bolts. place you a boost controller on and a fcd. oh full 3inch. turbo back exhaust really wake that car up. the ct26 was good for 12-15 psi beore it ran out of breath. stock boost was 8.

 

There is a LOT of expertise on the 6+ year old ECOTec technology. There is a LOT MORE expertise on the 103 year old turbocharging technology. And adding forced induction to a motor isn't inherently tied to the motor itself... that is... you can turbo just about anything. Having said that, of course it would be silly to take "a free turbo and test it for two days." I don't think anyone here is suggesting that. However, if you're wondering how designs get developed... it's because the have to get developed. They don't appear magically. Someone has to do the work.

Plenty.

 

Darnit, XXL, I was trying to get out of doing the math. I thought you might reply with the rectangle already drawn. It was worth a shot anyway. I will get on it.

Brandon, from what I've heard, the most I have seen the LNF injectors use is very low (~30%) of the duty cycle. We have got lots of headroom. As to your suggestion that we should max out the LNF with bolt-ons, the performance aftermarket is pretty much in agreement that the turbo can be maxed with a tune alone. Full turboback is available from ADM, and Andy has said you'd see little to no gain on it if you are already tuned because the turbo is the limiting factor. That's why I'm already looking at big turbo. We can see gains from things like intercoolers that cool the charge or flywheels and pulleys that reduce drivetrain losses, but we stand to gain nothing from breathing mods until we free up the restriction, which is the turbo at 290-300whp. I want to see 400 or so.

As to your discussion about Hahn being the only experienced expert vendor, you are right if you only consider information you get here on these forums. But that's why I have been branching out to other LNF forums and bringing that information back here. There is a GT35R powered Solstice, and BTF is running a GT30R on his vehicle. They run their cars to 7900 and 7400rpms on a daily basis because their turbos will keep supplying air and making power to those RPM's and they've proven that the valvetrain can take it. The guy who runs his car to 7900 has replaced his balance shafts with neutral shafts from GMPP for high RPM operation. I'm waiting for someone to come out with a balance shaft removal kit to reduce oil windage, lower drivetrain losses, and allow me to rev that high. BTF has also started offering a bigwheel kit, and though the price is relatively steep, it makes significantly more power than our stocker and will carry it to 7400.

Hope that was helpful.

 

30% Duty Cycle isn't bad at all. I think we could easily hit 400WHP with stock injectors. I am hearing and reading that these are the Gen II Ecotec engines and are much stronger and efficient than other 4 cyl engines. Combination of components should be looked at before installing. We all know that all mods need to work together to get the most out of it and could save a ton of money. My only concern right now for any mods in the Transmissions.

 

Right on... most of us on this board are NOT on the forefront of this engine platform. Reinforcing my point above-- there's LOTS of experience in front of us on mods.

BTW, for those of you headed to the parking lot to race down to your local dealer for the GMPP neutral shafts, sit back down. The part number is discontinued and GMPP is only selling out stock. I'm sure somebody else will come along with a nice rotating assy for the LNF... just don't blow anything up before then

 

that clear up some things for me aaron. please don't take me for being an ass. looking at the dyno numbers, eric and i are in the 260-265 hp range. if these cars max out at 290-300, then adding a turbo back should really wake this thing up. we still have 25-35 hp to go. if you get the ic,well you're maxed out i guess. i guess i worded my statement wrong.

what i meant ws, the way i'm thinikng,do all the bolt on parts now,in preparation for a bigger turbo. what's the point of looking for a bigger turbo,when the ic's and piping are not out yet(soon very soon). i knoe adm has an exhaust coming,but it's not out yet. not saying it's wrong to look to the future,but the priority should be built from the bottom on up. still looking for a better clutch to handle the power i plan on throwing at it(i plan on going bigger turbo too,around the spring time).