artguy

gt40r is bigger than the gt3540 and with better flow right? i want better spool than both those setups. no matter what, I am still a low end torque ho.

kan is building this setup to my needs. he knows what i want. if he says this is how to do it then this is what i will do. the guy is brilliant. I won't be dealing with anyone else but gotham from here on out.


j

wingsfan

I don't want to shift the focus of your thread, but I'll be down in Austin in a number of months. I'd be happy to take you for a spin in a v8 powerd 7. Turbojeff here seemed to like it just fine

https://www.rx7club.com/showthread.p...hreadid=280030

It's not problem free at this point, but it is pretty damn cool.

artguy

i will take you up on that. you will love austin. it is a great town.


j

Mr rx-7 tt

iTrader: (5)

Jason, Sorry to hear about your misFORTUNE.

GoRacer

iTrader: (2)

Right on, I may have to switch to that one instead also!

wrxfan

damn nice numbers

artguy

no kidding...its a lot of lost cash which does not make me happy at all. i actually considered parting the car out and putting it back to stock and selling it. in the end the thought of not having it was more upsetting than spending my paint job cash on doing it right.


j

911GT2

Sorry to hear about the tough times, but you should be in good hands with Gotham. And just keep thinking of the smiles that single will put on your face

I have heard nothing but good things about Steve and crew down there in TX, and I know I have nothing but good things to say about Steve after he tuned my car up here. It's nice to know we still have at least one respectable shop left...

rynberg

That's too bad, Jason. I hope both the shops you were involved with take a beating on this. Apexi should wake up and smell the ******* coffee in regards to XS Eng.

Good luck with your new setup. Hopefully everything will go OK with this setup!

kwikrx7

Hey Jason, my sequential partner....I also stop in once in a while to see if you might hit 400 rwhp one day...seeing that you did beat me by 1 rwhp in the sequential showdown race to the 400 mark. Point is after all the money we both spent I don't think anyone will do it with sequential twins - oh well, who cares.

Sorry to hear about all the crap that's happened to you -it's definitely a money game (especially when your car is not in the right hands)

That's cool that you're going with an exciting single setup. Nothing will be like the twins but there's nothing like diagnosing which damn solenoid is acting up. You'll be very happy with it and I'm sure a t-62 dual BB will friggen rock down low - if anything you'll be more happy with the powerband and torque curve of that particular setup. Good luck and keep us posted.

Take care,

Barry

Thxbrett

iTrader: (1)

Hey Jason,
Yes I am still over at Vishnu Performance waist deep in Evo VIII's! If you are only looking at around 400 RWHP I would seriously look at the smaller GT35/40 with the .82 exhaust housing. That will give you the killer low end as well as a better top end then you had before.

As for my LS1 project it looks like it will be under way very shortly. Probably will keep it N/A at first with a cam, LS1 edit, exhaust and head work. Then if I really want to shoot myself in the head I will add a twin turbo set up to really destroy my remaining sanity. I can never own a car, it must be a PROJECT that does not run for at least a year and sucks down 3 times as much cash as I had budgeted. Anyway I look forward to hearing about your single set up Jason.

Brett.

pp13bnos

iTrader: (1)

Welcome to the darkside. You know, you where the last person I figured would go single. Sorry to hear about your problems. CJ

pureFD

Beware not all dyno's are created equally, most do not simulate load properly. In the Case of XS Engineering, if they used their Dynojet to tune the car, it was not the tuners fault, but the dynos. Since Dynojets don't simulate the correct amount of load for actual road conditions. It is possible that XS tuned it to the specified 11.2 AFR but on a different dyno or in actual driving conditions the car would be a leaner 11.5 AFR. For This reason is very important that you have the car tuned on a dyno that actully simulates driving conditions. Here is a article that will explain the differences between a Dynojet and Mustang dynameter. http://www.mustangdyne.com/Articles/...article-01.htm

artguy

I paid an arm and a leg for them to do a half assed job on their dyno. they tune with the dyno. it isnt the dynos fault. they should be tuning slightly rich so that the adjustment is right on the street. that is the simple fact. i spoke with rrr about it and they also agreed. they thought xs should be tuning in the high tens so that it is safe on the street. i wish they had. id rather have a slower car than not at all.

the timing is a mess. it is done without much thought or knowledge.

also, i checked their afr's on a dynojet just like theirs.

so, perhaps you are right, had we tested it on the street we may have found different numbers. that was to be expected. i paid xs a TON of cash to tune my car and it was not done right. i mean hell, they took off my j&s without my permission and left it off. when i asked why i was told that it was because the timing was already retarded. guess what? it wasn't


but honestly at this point i really dont care. i wont ever have to deal with them again and now that i am out here I am near gotham and a crew who cares about their work and the cars that go through their doors. i cant buy integrity when i go to a performance shop. that has to be there before I even get inside.


j

artguy

I can not agree more. If it was not for the crew at gotham I would be parting it out to you all. This is the truth. The only reason I still have any hope to get this right is because I trust what they do there. It is a good thing to feel that way for the first time in a long time.



j

artguy

well i hope no one else has to get into the situation I did. there is nothing worse than believing that you are doing everything right, paying fistloads to do it right, only to be taken advantage of out of laziness. I am so glad to be out of LA while doing this final run at getting my car strong. I will keep ya posted.

artguy

funny thing barry is that i considered selling it right about the time you did. (oh man it finally works!! I better sell her before she robs my bank acct again!)

but it was just too much fun. i thought that if i babied it that i would have it strong for a long time. i kept the temps low, never boosted it over and over again, and watched all my readings like a doctor would a heart patient.

it didnt matter because it was tuned too lean.

j

artguy

well brett, i hope you will be posting the progress shots and info here for us to keep an eye on. you might get the occasional tribunal forming but for those of us who just enjoy seeing cool projects come to fruition it will be a nice to see.

yeah..i looked at the gt3540. thats a great setup.

whats the fastest wrx or evo you all have built up?? are there any fd killers released on the street by you all?

cheers

j

artguy

thanks. im hoping im getting out of the dark side. id prefer to be on the driving while the weather is still nice side.




j

Thxbrett

iTrader: (1)

Our shop car is making around 575 horspower and running mid 11's with a shitty launch. That was on a stock motor, stock intake and a 3037 Turbo with a .63 A/R. We are now doing both a 2.3 liter and 2.0 liter built motor set up with the GT 35/40 .63 A/R. Should be a good deal quicker and I would expect a low 10 out of that car.

As for the Rotary love/ V-8 hate, well it is somewhat to be expected. After all this is a Rotary board and not Corvetteforums. I am sure there will be a few guys over there that think the RX-7 sucks ***, and why put the LS1 in it etc etc... But hopefully there are a few people on this board that will simply judge the project on it's merits. I hope to be able to update this board with my progress without going to flameville.

I have owned a Rotary before, worked at a Rotary shop and now would like a reliable V-8 under the hood. To tell the truth I was looking at doing an old school 68-69 Camaro R/S/, SS and do a big block, suspension, disc brakes etc etc as my girlfriend had one. Some ***** had stolen her car years earlier and she has been wanting to replace it ever since. I then thought about how much I loved my RX-7 (when it ran right) and how I could get my V-8 fix and have a fantastic, lightweight sports car as well. This car would handle like a dream, look bitchin, weigh around 500 pounds less and I just happen to know the car a lot better than the 69 Camaro. Plus for around $15000 complete it will be a lot cheaper than doing the Camaro.

It would also mean I could put in the CA 91 octane swill without fear of detonation everytime I hit the accelerator. My Eclipse which is for sale on the for sale page needs two maps to maximize the power of the turbo I am running. The 91 octane map makes 400 hp, the 100+ octane map makes another 80 hp! Unfortunately that gas is $4.50 a gallon and not available everywhere. That's why I had a dedicated auxillary 8 gallon fuel cell put in the trunk so that when needed I could flick a switch and change my map, and also change the fuel tank over with the race gas in it. Instant 80 hp that will last longer than a nitrous hit!

Can't wait to see your dyno results Jason. I will post up mine when my project is complete.

Brett.

Kento

PM'ed you, Jason.

pureFD

Jason....
I am not defending XS In any way. I used to own a Type-R, and live in Ohio, and had my engine build in and tuned in LA. They blew up my first motor by ignoring the engine builders warning about the allowed cam gear adjustment. Once ignored..... KABOOM!!!!! Valve collided. I would have quit going to them by now, but this was the time before EMS's and was just getting started. I had them tune my Power FC (On Milder cams this time so no possibility of collision). To make a long story short..... They tuned the car on their dyno jet, $1500 and 24 hrs. Later the car was on a trailer back to Ohio. Car ran awesome for during the hot California like summer conditions. When the weather turned cold and Slick tires added, the car leaned out and pounded in some rod bearings. So I feel your pane. Since then I have opened my own shop and have a Mustang dyno coming on Wednesday. I hope you have better luck, Mine has changed for the better since we started doing everything in house.

Aaron

1FooknTiteFD

Sorry about your car Jason, I hope all works out with you. Having followed your endeavors it seems like you had a long journey but I'm glad you finally settled to get a single turbo and hope that it will work out better for you than the twins did.

As far as XS is concerned...my experience had been ok. I have an Apex'i RX6 kit in which they dyno tuned and it made 378.9rwhp on their dyno at 1 bar on 91 octane with 10.8 AFRs. The car ran very smooth and has good power, it feels almost as smooth as stock. For people around the So cal area with a power FC i would recommend them. Before someone was capable up here to tune power FC's I had to drive all the way down there to get my car tuned, thank goodness for Ghetto Dave in the bay area haha.

anyways, good luck with your car I wish you well... modifying cars is truly a game of patience..

artguy

**** you always defend them. I had three experiences with xs. the last time i had issues with them you said i had to deal with them on their dyno. well I did and now I have a motor that was run lean and the maps & afr readings to prove it.

I will post my messy timing they said was retarded to show you how great of a job they did. it wasnt great at all. matter of fact it wasnt even retarded. my j&s was taken out and sits in a box in my garage. I wonder if my motor would be there had they left it in.


But thanks for the well wishing. I appreciate it. I hope your motor keeps healthy. I would get those maps checked if I were you.

this is turning into a bash xs thread. I dont want it to be like that. I would prefer to just let it go and deal with the new setup. there is nothing i can do about mistakes made in the past.

if anyone has a dyno sheet for a t62-1 I would love to see it.


jason

Kento

Heh...actually Jason, it kinda sounds like it was "retarded"... ....j/k....I know you don't want to turn this into a bash thread, so I'll respect that now...