Thanks. I have to say that this engine improved the performance much more than I anticipated. I thought it would be roughly a 10% gain, but I didn't think I would feel the raw improvement in performance as much as I do.

Yes, without question.

I probably have a different background than most people on these forums. I raced in the NHRA's Modified Eliminator for ten years with a normally aspirated car. I like high revving NA engines... they are a blast to drive. To be honest, I'm just not a FI fan.

I originally planned to build a 4.2L stroker 100mm motor, but the cost was prohibitive. The stroker kit coupled with sleeve installation is very expensive. In all fairness, I have to admit that I also got a bit spooked about sleeving the motor.

It is +0.020 over... does that count?

Good question. The short answer is that it just happened that way, but they are both still necessary. Here's the longer story...

I was one of the first people to purchase UpRev's Osiris when it first came out. The e-tuned maps made quite a difference in the performance of my car. My G went from 250whp to 268whp with Osiris, headers, and HFC's on Jeremy's DynoJet.

I wanted to get a real time tune on a dyno and I wanted Jeremy Tibbs to tune it. I had been thinking about getting a Haltech and Jeremy said, "Let's do it." Spent a few days at the Performance Factory with Jeremy trying lots of options on the Haltech... also thanks to Hal for some tips... The result after adding the Haltech with nothing else was a gain from 268 rwhp to 286rwhp... pretty good gain for a modded stock block NA engine...

I'm sure you realize that none of the piggyback or standalone engine management systems can control the rev limit on a VQ35 RevUp engine. The OEM ECU controls the rev limit through the drive-by-wire system. That meant that I needed to flash the ECU to increase the rev limit for my new engine. Most of the big shops flash the ECU when they do a build... they just don't talk about it much... These shops don't always raise the rev limit, sometimes they just remove the speed limit or cancel out diagnostic trouble codes (DTC's, CELs).

So, I used Osiris Tuner Pro to flash the rev limit above the actual limit... that allowed Jeremy to control everything with the Haltech. It seems to have worked out well, so far. There is an obvious redundancy in having two EMS systems, but that's the way it is for now.

 

18 hp from Osiris to Haltech hmmm... well, I went form TS to Osiris, and I've spent more on other things that made less hp... maybe Haltech is worth a look?

 

very nice John, cant wait to see it at cocoa beach next year

 

your next step should be itb's. do it do it do it!!!!

Congrats bro!

 

sick!

 

I want a ride...u have to give me a ride in it..very nice john...my LR G brother..

 

Nice! Awesome numbers too!

 

That was from an Osiris e-tune, not a full-blown real-time Osiris tune on a dyno.

If you have a Tuner that is comfortable with tuning the OEM ECU with Osiris Tuner Pro, I'm not sure you would gain any additional power by adding a Haltech. If you have a RevUP, you will still need Osiris Tuner Pro to set the rev limits anyway.

I've heard that the Haltech will have some method of setting the rev limits on a revUp in the future... We'll just have to wait and see...

 

Thanks!

Yea, I hear you... ITB's certainly are hot looking... I've been following the thread... Very cool...

 

Awesome setup. It's refreshing to see something different!

Any chance you'll be able to post up some videos?

 

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Here's a video of it idling with a few blips. The sound doesn't come through real well, but you can get the idea.

I have a video of one of the dyno runs. I'll have to hunt it up tonight when I get home.

 

Cool, any way you could take an in-car "road-test" video with some WOT pulls?

 

get the stillen engine dampener and convert it to hydrogen assisted.. the hydro switch cost like $50 and its simple.. and yuo get better MPG and power increase.. but get the dampener too itll help..

 

Wow this is awesome. The redline is at 8k now?? Can we see some guagecluster videos?!

 

nice NA FTW!