jlturpin

We had a mobile dyno at Autocross yesterday (Dynojet 248). I made 266HP and 264TQ made a pull in 3rd and a pull in 4th (264hp&274TQ), both were very similar. Thought that was pretty good for a car with 150K miles. Vitesse MAF, 55# injectors, and huntley Stage II turbo (garrett Hybrid, T04b with KKK hotside (50 trim), tial waste gate, Adjustable fuel pressure regulator.......

Guess this is close to 300 HP & 300 TQ at the flywheel. Is that correct? Nice graph, with power held until fuel cut, pretty flat in third (holds above 250), but drops of a little on the 4th gear pull (holds above 210, starts dropping off @ 5K rpm)

Jonathan

streckfu's

I would expect you to make more torque. Can you post the graph? It seems like you're low in both HP and TQ. At what boost was this run and how's your AFR?

jlturpin

I will post later, will have to scan it. They did not have a wide band, nor do I. It was @ 18PSI.

jlturpin

here is the graph. Run one was 3rd gear, run two was 4th gear.

streckfu's

4th gear is better for dyno runs due to the gearing being closer to 1:1. That is the run I would use. It looks more like a typical 951 graph but somethng is still different. I would expect a greater difference between the TQ and HP with your mods. Why do I think you should be over 300rwhp and 330twtq at 18psi......

Someone with more knowledge should post.

jlturpin

I expected over 300 @ the wheels also, we'll wait to see what others say.

fast951

Jonathan, nice graph. Are you sure you have a 50trim compressor? I would have expected more out of it at 18psi boost..

jlturpin

John,

I am not 100% sure about the turbo. It was purchased by the previous owner from Huntley as a Huntley Stage II turbo. I installed it, while working for a local shop. I have very little information about it, other than what I found searching the internet. I guess huntley went out of business?????? The invoice from huntley give no description.

Tom M'Guinn

My Huntley "Stage II" makes a little over 300 to the wheels at 18psi. How is your wastegate?

jlturpin

waste gate is good, it will hold as much boost as I can throw at it. It is a tial 38 (or 48 don't know for sure) dual port.

ninefiveone

I would expect a lot more power.

On a dynot jet I've pulled 265rwhp/300rwtq with only stock turbo, chips, and exhaust at 18psi.

Matt H

How new are the ignition components? Looks like there is a chance of misfire on the graph.
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jlturpin

Brand new plugs and wires, cap and rotor are in great shape. According to the Dyno operator, my plug wires were too close together and the inductive pickup for the dyno got bad signal or picked up signal from another plug wire. I do have a cable tie on them before the fuel rail.

You know, it is funny that it happened in the same RPM range on both pulls???? I saw it on the screen when happened, but did not study the graphs once printed. I asked the dyno operator and he said it was no problem since it was linear.

Matt H

Seems like there is a larger problem overall. I would expect more power than that.
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porshhhh951

You should be making alot more power than that. Most well modded 26 cars are in the upper 200's...and your a aftermarket turbo.