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post #1 of 53 (permalink) Old 11-02-2012, 12:51 AM Thread Starter
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Building a 350-400 hp Redline

So here's what I'm thinking and I'd like to get feedback.

Currently I have the following aftermarket parts on my Redline: Intake, intercooler, exhaust and an oil catch (I'm not sure about this one, it was on there when I bought the car and was told that's what it is, though it doesn't really look like one. I'll take pics of it when I get home to see if you guys know what it is).

I'm thinking (and I'm open for input here) I'll get the Turbo Upgrade Kit from GM and have them do the GMPP tune. Then I'll get the high flow cat from SOLO. I've been told this will put me up to 300 hp and put me around 23 lbs of boost from the stock turbo.

Then I'm thinking I'll do the 5th injector upgrade, and install the Super 20G turbo (set at 23 lbs of boost) and BOV from Hahn.

At this point I believe I'll need another tune.

Here are my questions/thoughts:
I'm thinking I'll get the GMPP tune to give me the NLS feature and the 23 lbs of boost. My question is, can someone who knows how to tune one of these accomplish this without the GMPP tune?

Are there any additional mods I'll have to swap out/install to have a daily driver Redline at 350-400 hp? Are the mods I'm looking at enough get me there?

and . . . discuss

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post #2 of 53 (permalink) Old 11-02-2012, 05:47 AM
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You wont need the 5th injector until you're at 500ish HP. So scratch that.

NLS only works in a narrow RPM range and with other specific parameters. Just get the 3bar MAP sensors (2) and the plug in play harness from Crate Engine Depot, HPTuners and a good vendor tune. Then if you're interested start reading how to's on the HPT forum if you want to fine tune the setup.

SOLO High flow CAT is a stock replacement and a Hahn 20g will need a non-stock down pipe. I suggest getting the SOLO DP and a drop in turbo like the DDM GT2871, you can even get their tune.

You could probably get way with all of the upgrades with install for $3000 just by going to DDM. Then its a one stop shop and you'll have the least down time!

Good luck,

--Christian
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post #3 of 53 (permalink) Old 11-02-2012, 07:50 AM Thread Starter
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hmm SOLO claims it's a "high flow" converter. "It’s been a long road to manufacturing this high flow catalytic converter for the Redline."

That is good to know about the 5th injector.

Does anyone know if an aftermarket harness will cause the car to fail imissions tests in NY??
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post #4 of 53 (permalink) Old 11-02-2012, 08:04 AM
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the 20g will make more power the the 2871. The 20g also does not need a downpipe. It fits on the stock car.

peace out.
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post #5 of 53 (permalink) Old 11-02-2012, 08:33 AM Thread Starter
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The 20G is also on sale for $599 :-)
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post #6 of 53 (permalink) Old 11-02-2012, 09:17 AM
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PS - the GMPP does not give you 300 BHP, it gives 290.

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post #7 of 53 (permalink) Old 11-02-2012, 09:28 AM
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PS - the GMPP does not give you 300 BHP, it gives 290.
He said GMPP plus the high flow cat would get it up to 300 hp, which is probably about right. Those are the mods that I have done. The GMPP did squat for mine (max boost went from 18 to 19 psi, maybe). The Solo high flow cat did more based on my seat-of-the-pants assessment.

2008 Sky Redline
Manual
GMPP Tune
DDM Works IC Charge Tubes
Solo High Flow Catalytic Converter
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post #8 of 53 (permalink) Old 11-02-2012, 09:39 AM
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Right - missed the HF CAT!

1958 MGA Twincam
1962 MGA Coupe
1969 MGC roadster,
1957 Jamaican bodied MGA
1965 Jensen CV8,
1971 Jensen Interceptor
1969 Lamborghini Islero S
1988 Pontiac Fiero GT (sold)
2009 Pontiac Solstice GXP Coupe
2013 Mazda 3 Sport
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post #9 of 53 (permalink) Old 11-02-2012, 10:35 AM
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Just an FYI, but both Monadzback and Tony@ASAP graphics are on their second engines with the 20G turbo.

That is not a knock on the 20G, its a reality statement that if not tuned properly, the 20G can easily put out more power than the bottom half of the LNF can handle.
It's something you need to consider in your build process if you go with the 20G as it is capable of exceeding 400whp

If your goal is 350-400hp, then the 2871 is a great choice and will put you exactly in that range without the need to build up the lower part of your engine. It will also bolt up to everything you currently have.
As such, I agree with CDnite.

LUSIFER

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post #10 of 53 (permalink) Old 11-02-2012, 10:51 AM
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Quote:
Originally Posted by premlor View Post

Does anyone know if an aftermarket harness will cause the car to fail imissions tests in NY??
What kind of aftermarket harness?

Dave Michel
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Stage 3 Supercharged 2.4L - 314whp - 93 octane
Rotrex Supercharged 2.4L - 340whp - 93 octane
2871 Hybrid turbo 2.0L - 371whp - 93 octane
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post #11 of 53 (permalink) Old 11-02-2012, 10:58 AM Thread Starter
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Originally Posted by cdnite View Post
the plug in play harness from Crate Engine Depot
Good luck,

--Christian
Any turbo will blow an engine if not tunes properly. Supposedly the engine can handle 23 lbs of boost. Won't that hold true no matter what turbo you put in it? Sorry if it's a stupid question, but this is my first turbo car. I'm learning as I go.
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post #12 of 53 (permalink) Old 11-02-2012, 11:16 AM
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Originally Posted by premlor View Post
Any turbo will blow an engine if not tunes properly. Supposedly the engine can handle 23 lbs of boost. Won't that hold true no matter what turbo you put in it? Sorry if it's a stupid question, but this is my first turbo car. I'm learning as I go.
How much an engine can take is really not related to how much boost it can take. To give you an example, 23psi on the stock turbo is not going to move nearly as much air as 23psi on a 2871, 20G, EFR, etc. Therefore cylinder pressures are not going to be as high with the stock turbo at those pressures as it would be with the other turbos, and high cylinder pressures is what causes rods to bend and other bad things to happen. Also the stock turbo at those pressures is going to be backing up a lot of pressure into the head, along with a lot of heat, which is not great for the engine also.

Dave Michel
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post #13 of 53 (permalink) Old 11-02-2012, 11:25 AM
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Premlor

Look at the last line in Dave's Signature

2871 Hybrid turbo 2.0L - 371whp - 93 octane

Add E47 and you are right at 400whp [If not a little over] without needing a 5th Injector.

That's fits your exact range in the title of this post.

As far as the harness and your code question.
If you install the Bosch 3 bar sensors, the tune needs to be updated or you will throw Cels.
So you want to install those just before you re-tune.

LUSIFER

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post #14 of 53 (permalink) Old 11-02-2012, 11:57 AM
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the 20g will make more power the the 2871. The 20g also does not need a downpipe. It fits on the stock car.
The 2871 spools a lot faster though. No lag
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post #15 of 53 (permalink) Old 11-02-2012, 03:01 PM Thread Starter
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OK, so I'm looking at the bosch sensors, a turbo (opinions seem to vary on which one would be best), BOV, ECU, SOLO high flow cat (is the DP just a straight pipe or is actually a higher flowing cat?), and tune. Is there anything else I'll need? Did I miss anything?

Is DDM a shop? Where are they located? I'm in NY, but I've been known to drive cross country every so often. As a matter of fact I'll be driving down to FL at the beginning of Dec. I could install all of these myself in like an hour. How much do you guys think DDM would charge to install it all and tune it if I pick up all the parts?
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