Stef's 7AFTE Tech/Project, First Dyno run pg16 Options

[hurley97]

As many of you know I'm going to turbo the 7A.


So first things first, with the help of Garrett's Turbo Tech 103 (Expert), I did the compressor flow map calculations... try to follow along, if you have any questions just ask...

here are the EQUATIONS:


and the CALCULATIONS (for a 7AFE with a target of 200hp at the flywheel):


then you need to plot some numbers on the COMPRESSOR FLOW MAP of your choice
I got a small Garrett 2052 which should be enough for my goals


From just looking at different compressor flow maps you'll learn a lot. In general, the closer the turbine and exhaust housing sizes the wider your power range will be but the maximum boost level is limited. When the sizes are significantly different you'll notice the compressor map will look taller and thinner, that gives you a smaller RPM range you can boost in but you can achieve higher boost levels in that range.

This post has been edited by hurley97: Jul 24, 2009 - 5:13 PM

[OOBE]

You should have no problem with hitting the 200 HP mark, but you will also have no problem frying the tires with that little-ass turbo, hahaha. Gives me a warm, fuzzy feeling seeing other 7A-FE projects come into fruition. I started in 2003 and I haven't dyno-tuned yet or even finished, LOL.

[hurley97]

You should have no problem with hitting the 200 HP mark, but you will also have no problem frying the tires with that little-ass turbo, hahaha. Gives me a warm, fuzzy feeling seeing other 7A-FE projects come into fruition. I started in 2003 and I haven't dyno-tuned yet or even finished, LOL.

I finally decided on this and started gathering parts sometime in the beginning of 2007. probably around March or so. I started having some problems with my current engine and it wasn't until I got the other engine from Defgeph in August that I really started getting serious about it. Now I have about 80% of the parts. If all goes well I hope to have the rest of the parts and get the turbo in by the summer time.

[OOBE]

You should have no problem with hitting the 200 HP mark, but you will also have no problem frying the tires with that little-ass turbo, hahaha. Gives me a warm, fuzzy feeling seeing other 7A-FE projects come into fruition. I started in 2003 and I haven't dyno-tuned yet or even finished, LOL.

I finally decided on this and started gathering parts sometime in the beginning of 2007. probably around March or so. I started having some problems with my current engine and it wasn't until I got the other engine from Defgeph in August that I really started getting serious about it. Now I have about 80% of the parts. If all goes well I hope to have the rest of the parts and get the turbo in by the summer time.

Even though it will not fast by any means, just the gigantic difference in power from the stock engine will put a huge smile on your face. It's a very awesome feeling.

Right after I installed everything and got out of the muffler shop, I was only boosting 3 PSI (well, boost gauge and EBC indicated 3 PSI, and the spring was a 4.3 PSI one ) . The few extra ponies made a big difference. I nailed it and the car spun those 17" Enkeis like nothing when boost came on, while lurching forwared strongly and gaining speed quick. Not bad, especially from a 60 MPH roll. Mine is automatic, and it still felt like a huge difference. I'll tell you something, honest as it can be: I had a 600 horsepower Supra in Virginia, and I still enjoyed my Celica when I came to the island for vacation. I could be at a red light and punch it when it turned green, and it was instant tire spinning, along with pretty strong torque steer, and a very satisfying pull. The externally-dumped wastegate sound was a treat to the ears, too, followed with the BOV sound when releasing unused boost when I let go the gas to slow down. I climbed to 60 in less than 6 seconds, which I measured many, many times. Big difference compared to the [as far as I remember] 9 seconds it took in stock form. Sorry for the long post, but I get excited when someone else is about to go through something I've experienced prior.