turbo 3v throttle body questions

[JoshK]

edit.

 

[JeremyH]

That is 5rwhp on a 700hp car, on the average Joe's setup I doubt it would gain 5hp in blow thru setup

Yup, every setup is different. Its a supporting mod.

Its also depends on the blow-thru power adder style as well. A turbo would obviously benefit more than a centri since full boost is generated much lower in the rpm range.

 

[Marc s]

5rwhp and 10rwtq are nice gains for just a tb. What did you expect?

Its a supporting mod.

Now is 5rwhp/10rwtq worth the $500 price tag of a shiny frpp tb, not in my book. You can get a frpp manifold for that price and pick up 20-30rwhp.

Is that worth it? Heck yeah imho.

To each thier own.

I was only expecting around 8whp. Hindsight being 20/20, I would have still bought it. Hell, at least I didn't lose HP.

That's a .714% increase of hp lol

I bougth the FRPP TB used. The cost per HP was only $60.00.

Yup, every setup is different. Its a supporting mod.

Its also depends on the blow-thru power adder style as well. A turbo would obviously benefit more than a centri since full boost is generated much lower in the rpm range.

That could be true. In all fairness, the hp and torque gains under the curve were greater than the peak gains. But on a low boosted blow through setup, I bet the gains would be close to zero regardless of power adder.

 

[JeremyH]

I suspected the same as well Marc, more gains under the curve than just peak numbers. I try not to look at peak numbers as much. When someone says they picked up 5 peak rwhp for example it doesnt sound super great but if thats at least 5rwhp or more from say 3000 to 6000rpms thats a big difference for an inexpensive easy to do mod.

Just like my frpp manifold testing I did, at 12psi peak power only went up 24rwhp, But from 3500-5000 rpms it was up 32-35rwhp.

I will stick to my guns on the bigger tb for our cars as a good supporting mod. If a na car picks up 2-3rwhp its gonna pick up at least that or more at 10psi with a blow-thru power adder. Sure you dont need it but hey it definetly doesnt hurt and all the little mods add up.

Its just like doing weight reduction couple lbs here and there... and next thing you know you have dropped 100lbs off the car.

So for power mods a couple hp here and there, delete plates, udp, tb, bigger cai, no cats. All these mods add up to overall make a more powerful and faster car.

 

[tached_out]

My car did the exact same thing and it was the tune. I had no drivabilty and it surged and bucked at low rpms. Got it tuned later down the road with my boost and the care had stock drivability and was a different car to drive.

 

[v8venomgt]

I have a GT500 TB on mine but in hindsight I think it was a wast of money with a blow through setup. Your problems are definitely tune related. Turbos are very hard to tune and the cold start and drivability are the hardest part. Where are your O2 sensors located in relation to the distance from the turbo. The O2's need to be as close to the turbo as you can put them so that they get hot enough for the computer to get understandable readings. When the O2's don't get hot enough the computer dumps more fuel into the engine to try and make more power for hotter temps. I have my car running in open loop until the O2's get hot enough for the readings to be reliable. The MAF transfers and open loop tuning have to really good on a turbo setup.


Earl

great info, thanks for chiming in

Definitely sounds like a tune issue. If your tuner didnt get that straight on the dyno the first time I would be looking for another tuner.
I had my car remotely tuned by Lito and it is badass, perfect driveability, no hiccups, stutters or bucking. You should PM him.

i still have faith in my tuner, my car has been apart, and together, the turbo resealed, and a stefs oil/air seperator has been added since the initial tune. perhaps none of these made an impact, since the tune, but who knows at this point. i still confidence in my tuner.

My car did the exact same thing and it was the tune. I had no drivabilty and it surged and bucked at low rpms. Got it tuned later down the road with my boost and the care had stock drivability and was a different car to drive.

all signs point to needing an updated and tweeked drivability tune. WOT poses no issues. ask the pullied trak pack, pullied 08 gt500, and stock 2010 gt500 from a few weeks ago

 

[JoshK]

Fwiw, I have a couple of issues with my tune and I called BBR and Bama Tunes today. BBR told me that they won't do an E85 email tune and Bama told me that they don't do email tunes for turbos. I am really thinking that I am going to have to try Lito for the tune on my car.

 

[v8venomgt]

Fwiw, I have a couple of issues with my tune and I called BBR and Bama Tunes today. BBR told me that they won't do an E85 email tune and Bama told me that they don't do email tunes for turbos. I am really thinking that I am going to have to try Lito for the tune on my car.

i definitely have options for a tuner where im located, mike post has built a pretty solid reputation. it may just need some fine tuning.

 

[Bobby]

i made 707whp on 93 octane @16psi with stock mani and stock throttle body

 

[Fallenauthority]

Fwiw, I have a couple of issues with my tune and I called BBR and Bama Tunes today. BBR told me that they won't do an E85 email tune and Bama told me that they don't do email tunes for turbos. I am really thinking that I am going to have to try Lito for the tune on my car.

*cough*do it*cough*

 

[s8v4o]

Fwiw, I have a couple of issues with my tune and I called BBR and Bama Tunes today. BBR told me that they won't do an E85 email tune and Bama told me that they don't do email tunes for turbos. I am really thinking that I am going to have to try Lito for the tune on my car.

Lito is more than competent to handle that for you.

 

[JoshK]

yeah, i have been talking to Lito and he seems like a great guy and have noticed that many people here have had great luck with him, thus the reference. I just need to get a wideband gauge to have a complete datalog before I could go that route(looking for a wideband)

 

[JEWC_Motorsports]

5rwhp and 10rwtq are nice gains for just a tb. What did you expect?

Its a supporting mod.

Now is 5rwhp/10rwtq worth the $500 price tag of a shiny frpp tb, not in my book. You can get a frpp manifold for that price and pick up 20-30rwhp.

But when you can pick up a bbk 62 or gt500 tb for $100-150 in the classifieds.

Is that worth it? Heck yeah imho.

To each thier own.

I agree. Im biased though.