ForgedPerformace Greddy TT / JWT 850BB comparison Test
Thread Starter
Joined: May 2005
Posts: 3,307
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From: Fayetteville, NC
I have been recieving a bit of PM's as how these things compare to the greddy TT. Its hard to compare when everyone is running diffrent boost and claim diffrent hp #'s from diffrent dynoes. Many folks here are all hard up on numbers, but dont realy understand the power curve and just look for numbers. On the track it a no issue, but oon the street it a whole other game.
So just for you 350Z forum members, ALBERTO and myself are going to break it down as even as it can get. We were lucky to get hooked up by a freind at work to use and airfield for 20min for the test. Dont ask where!
Alberto's car and my car are twin when it comes down to power as we both have 480-490@low and 534-541high same PSI levels, both tunes by Sharif and both tuned on the same dyno. Cars look the same and probably weigh the same, all function no plastic part to slow you down or add weight, same wheels ect... The only diffrence is the 3.3final, and my bigger turbos. Untill I resolve the fuel issue, I am stuck @ 20psi on race, and thats where these things feel like they are comming alive.
It will be this Friday. We will post a video and all the goodies for our friends here in the FI forum.
It's going to be fun, after we'll hit the town and just rape everyone
Then Saturday "Rockingham Dragway" for some 1/4 numbers.
"Who Will Win?"
So just for you 350Z forum members, ALBERTO and myself are going to break it down as even as it can get. We were lucky to get hooked up by a freind at work to use and airfield for 20min for the test. Dont ask where!
Alberto's car and my car are twin when it comes down to power as we both have 480-490@low and 534-541high same PSI levels, both tunes by Sharif and both tuned on the same dyno. Cars look the same and probably weigh the same, all function no plastic part to slow you down or add weight, same wheels ect... The only diffrence is the 3.3final, and my bigger turbos. Untill I resolve the fuel issue, I am stuck @ 20psi on race, and thats where these things feel like they are comming alive.
It will be this Friday. We will post a video and all the goodies for our friends here in the FI forum.
It's going to be fun, after we'll hit the town and just rape everyone
Then Saturday "Rockingham Dragway" for some 1/4 numbers.
"Who Will Win?"
Last edited by eagletanggreen; Aug 28, 2007 at 06:09 PM. Reason: edit
It's not really fair as a turbo comparo because a smaller turbo will have the advantage as you move down the psi ladder. The turbos are not *that* different I guess but you are normalizing for power, so it comes down to driver, shifting etc.
To really do a good comparo, I'd think you would want to use max efficiency psi for each turbo, which I think is 18 psi for the Greddy and what 20 or 22 psi for yours? You can't do that w/o more fuel (or a W/M kit) and I don't think Alberto is tuned for 18 so now way to do this
Alberto, no cheating with the brake booster - to make it fair you should give that to Eagle
To really do a good comparo, I'd think you would want to use max efficiency psi for each turbo, which I think is 18 psi for the Greddy and what 20 or 22 psi for yours? You can't do that w/o more fuel (or a W/M kit) and I don't think Alberto is tuned for 18 so now way to do this

Alberto, no cheating with the brake booster - to make it fair you should give that to Eagle
Last edited by rcdash; Aug 27, 2007 at 02:45 PM.
Congrats Louie for what did you achieve your car is a beast
, and thanks for doing it for us we look forward for the comparison, but please i have a small request i wanna see the C6 Z06 get passed by JWT/GReddy TT 350Z`s
, and thanks for doing it for us we look forward for the comparison, but please i have a small request i wanna see the C6 Z06 get passed by JWT/GReddy TT 350Z`s
TSG-this i shappening in MD, I am filming with some buddies, we'd like to keep the cars to a minimum, thanks for the offer though.
rcdash-we are comparing pump gas powerbands, because while Luie's car is a monster no doubt-95% of the time he will be on pump gas so he wants to compare the "street" powerbands. Id be more than happy to retune at higher boost and if all goes as planned I'll have that for our Sept 21st track day and we will have round 2 when he drives back up.
This will be fun, Id like to do both non brake boosting and brake boosting races just to see what would happen-Im giving him everything I got as if he would pull up next to me on the "airstrip" without me knowing what he had
Pics, vids, stories to come.....
rcdash-we are comparing pump gas powerbands, because while Luie's car is a monster no doubt-95% of the time he will be on pump gas so he wants to compare the "street" powerbands. Id be more than happy to retune at higher boost and if all goes as planned I'll have that for our Sept 21st track day and we will have round 2 when he drives back up.
This will be fun, Id like to do both non brake boosting and brake boosting races just to see what would happen-Im giving him everything I got as if he would pull up next to me on the "airstrip" without me knowing what he had
Pics, vids, stories to come.....
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Thread Starter
Joined: May 2005
Posts: 3,307
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From: Fayetteville, NC
Yep this is going to be sweet!
I am getting more confident on this set up. I just raced my buddies Honda 954 from a 3rd roll and put 3 cars by the end of forth and pulled on him hard in 5th. I think my 5th is the "Destroyer gear" This is with mid boost.
I wonder how I would do against a Busa with my race gas!
PM for a video
I am getting more confident on this set up. I just raced my buddies Honda 954 from a 3rd roll and put 3 cars by the end of forth and pulled on him hard in 5th. I think my 5th is the "Destroyer gear" This is with mid boost.
I wonder how I would do against a Busa with my race gas!
PM for a video
So what are the odds looking like? LOL-Luie I cant wait man, I cant see your speedo that well but how long does it take you to go from 50 or above to 159mph? I tried comparing to my vid side by side and it looked damn close...problem with my vid was I started low in 3rd @ 50mph but spun to 80mph.
Thread Starter
Joined: May 2005
Posts: 3,307
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From: Fayetteville, NC
Originally Posted by Alberto
So what are the odds looking like? LOL-Luie I cant wait man, I cant see your speedo that well but how long does it take you to go from 50 or above to 159mph? I tried comparing to my vid side by side and it looked damn close...problem with my vid was I started low in 3rd @ 50mph but spun to 80mph.
What was the temp when you did the videos? I am thinking with the weather being so hot, its the reason I am hooking 3rd.
I am down load the vid bare with me.
It was cold enough for me to spin 3rd from 50mph, Id say 50 degrees or colder...even in 100 degree heat with 285's and -1 rear camber gets me wheel spin in 2nd gear WOT (low boost), but I can peddle it
Doug-bring your black beast to MD and let me know ahead of time so we can set something up....

Doug-bring your black beast to MD and let me know ahead of time so we can set something up....
Thread Starter
Joined: May 2005
Posts: 3,307
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From: Fayetteville, NC
Originally Posted by Alberto
It was cold enough for me to spin 3rd from 50mph, Id say 50 degrees or colder...even in 100 degree heat with 285's and -1 rear camber gets me wheel spin in 2nd gear WOT (low boost), but I can peddle it
Doug-bring your black beast to MD and let me know ahead of time so we can set something up....

Doug-bring your black beast to MD and let me know ahead of time so we can set something up....

Remember to always take it to the track!
Last edited by eagletanggreen; Aug 27, 2007 at 06:18 PM.
Thread Starter
Joined: May 2005
Posts: 3,307
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From: Fayetteville, NC
Originally Posted by Jonny Boy
Anyway you could send me the vidoe?
I think we should make this a PayPer View Event. jk. Cant wait to see the videos.
I think we should make this a PayPer View Event. jk. Cant wait to see the videos.
Sure thing!
I am sure we can get a DVD going!
Thread Starter
Joined: May 2005
Posts: 3,307
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From: Fayetteville, NC
Originally Posted by Alberto
Luie's car is sick, if I do lose at least it will be to a bad a$$ pretty custom set-up, but to date I havent lost in low or my high boost

Same here bro, same here!
Cant wait!
Originally Posted by Alberto
Doug-bring your black beast to MD and let me know ahead of time so we can set something up....
Originally Posted by doug
i am bringing the new blue beast.. you want a piece of her.. you let me know 




